Mon Oct 8 12:39:23 2012

Asterisk developer's documentation


http.c File Reference

http server for AMI access More...

#include "asterisk.h"
#include <time.h>
#include <sys/time.h>
#include <sys/stat.h>
#include <sys/signal.h>
#include <fcntl.h>
#include "asterisk/paths.h"
#include "asterisk/network.h"
#include "asterisk/cli.h"
#include "asterisk/tcptls.h"
#include "asterisk/http.h"
#include "asterisk/utils.h"
#include "asterisk/strings.h"
#include "asterisk/config.h"
#include "asterisk/stringfields.h"
#include "asterisk/ast_version.h"
#include "asterisk/manager.h"
#include "asterisk/_private.h"
#include "asterisk/astobj2.h"

Go to the source code of this file.

Data Structures

struct  ast_cfhttp_methods_text
struct  http_uri_redirect
struct  uri_redirects
struct  uris

Defines

#define DEFAULT_HTTP_PORT   8088
#define DEFAULT_HTTPS_PORT   8089
#define DEFAULT_SESSION_LIMIT   100
#define DO_SSL
#define HOOK_T   ssize_t
#define LEN_T   size_t
#define MAX_PREFIX   80

Functions

static int __ast_http_load (int reload)
static void add_redirect (const char *value)
 Add a new URI redirect The entries in the redirect list are sorted by length, just like the list of URI handlers.
const char * ast_get_http_method (enum ast_http_method method)
 Return http method name string.
void ast_http_auth (struct ast_tcptls_session_instance *ser, const char *realm, const unsigned long nonce, const unsigned long opaque, int stale, const char *text)
 Send http "401 Unauthorized" response and close socket.
void ast_http_error (struct ast_tcptls_session_instance *ser, int status_code, const char *status_title, const char *text)
 Send HTTP error message and close socket.
const char * ast_http_ftype2mtype (const char *ftype)
 Return mime type based on extension.
ast_variableast_http_get_cookies (struct ast_variable *headers)
 Get cookie from Request headers.
ast_variableast_http_get_post_vars (struct ast_tcptls_session_instance *ser, struct ast_variable *headers)
 Get post variables from client Request Entity-Body, if content type is application/x-www-form-urlencoded.
int ast_http_init (void)
uint32_t ast_http_manid_from_vars (struct ast_variable *headers)
 Return manager id, if exist, from request headers.
void ast_http_prefix (char *buf, int len)
 Return the current prefix.
int ast_http_reload (void)
void ast_http_send (struct ast_tcptls_session_instance *ser, enum ast_http_method method, int status_code, const char *status_title, struct ast_str *http_header, struct ast_str *out, const int fd, unsigned int static_content)
 Generic function for sending http/1.1 response.
int ast_http_uri_link (struct ast_http_uri *urih)
 Register a URI handler.
void ast_http_uri_unlink (struct ast_http_uri *urih)
 Unregister a URI handler.
void ast_http_uri_unlink_all_with_key (const char *key)
 Unregister all handlers with matching key.
static char * handle_show_http (struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
static int handle_uri (struct ast_tcptls_session_instance *ser, char *uri, enum ast_http_method method, struct ast_variable *headers)
static void http_decode (char *s)
static void * httpd_helper_thread (void *arg)
static int httpstatus_callback (struct ast_tcptls_session_instance *ser, const struct ast_http_uri *urih, const char *uri, enum ast_http_method method, struct ast_variable *get_vars, struct ast_variable *headers)
static struct ast_variableparse_cookies (char *cookies)
static int static_callback (struct ast_tcptls_session_instance *ser, const struct ast_http_uri *urih, const char *uri, enum ast_http_method method, struct ast_variable *get_vars, struct ast_variable *headers)

Variables

static struct ast_cfhttp_methods_text ast_http_methods_text []
static struct ast_cli_entry cli_http []
static int enablestatic
static struct ast_tcptls_session_args http_desc
static struct ast_tls_config http_tls_cfg
static struct ast_tcptls_session_args https_desc
struct {
   const char *   ext
   const char *   mtype
mimetypes []
 Limit the kinds of files we're willing to serve up.
static char prefix [MAX_PREFIX]
static int session_count = 0
static int session_limit = DEFAULT_SESSION_LIMIT
static struct ast_http_uri staticuri
static struct ast_http_uri statusuri


Detailed Description

http server for AMI access

Author:
Mark Spencer <markster@digium.com>
This program implements a tiny http server and was inspired by micro-httpd by Jef Poskanzer

ExtRef:
GMime http://spruce.sourceforge.net/gmime/
AMI over HTTP support - AMI over the http protocol

Definition in file http.c.


Define Documentation

#define DEFAULT_HTTP_PORT   8088

Definition at line 64 of file http.c.

Referenced by __ast_http_load().

#define DEFAULT_HTTPS_PORT   8089

Definition at line 65 of file http.c.

#define DEFAULT_SESSION_LIMIT   100

Definition at line 62 of file http.c.

#define DO_SSL

Definition at line 69 of file http.c.

#define HOOK_T   ssize_t

Definition at line 766 of file http.c.

#define LEN_T   size_t

Definition at line 767 of file http.c.

#define MAX_PREFIX   80

Definition at line 61 of file http.c.

Referenced by __ast_http_load().


Function Documentation

static int __ast_http_load ( int  reload  )  [static]

Definition at line 1015 of file http.c.

References ahp, AST_CERTFILE, ast_config_load2(), ast_free, AST_RWLIST_REMOVE_HEAD, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, ast_sockaddr_from_sin, ast_sockaddr_setnull(), ast_strdup, ast_tls_read_conf(), ast_true(), ast_variable_browse(), ast_tls_config::certfile, ast_tls_config::cipher, CONFIG_FLAG_FILEUNCHANGED, CONFIG_STATUS_FILEINVALID, CONFIG_STATUS_FILEMISSING, CONFIG_STATUS_FILEUNCHANGED, DEFAULT_HTTP_PORT, ast_tls_config::enabled, enabled, hp, http_desc, http_tls_cfg, https_desc, ast_tcptls_session_args::local_address, MAX_PREFIX, ast_variable::name, ast_variable::next, ast_tls_config::pvtfile, and ast_variable::value.

Referenced by ast_http_init(), and ast_http_reload().

01016 {
01017    struct ast_config *cfg;
01018    struct ast_variable *v;
01019    int enabled=0;
01020    int newenablestatic=0;
01021    struct hostent *hp;
01022    struct ast_hostent ahp;
01023    char newprefix[MAX_PREFIX] = "";
01024    struct http_uri_redirect *redirect;
01025    struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
01026    struct sockaddr_in tmp = {0,};
01027    struct sockaddr_in tmp2 = {0,};
01028    int http_tls_was_enabled = 0;
01029 
01030    cfg = ast_config_load2("http.conf", "http", config_flags);
01031    if (cfg == CONFIG_STATUS_FILEMISSING || cfg == CONFIG_STATUS_FILEUNCHANGED || cfg == CONFIG_STATUS_FILEINVALID) {
01032       return 0;
01033    }
01034 
01035    http_tls_was_enabled = (reload && http_tls_cfg.enabled);
01036 
01037    tmp.sin_family = AF_INET;
01038    tmp.sin_port = htons(DEFAULT_HTTP_PORT);
01039    ast_sockaddr_from_sin(&http_desc.local_address, &tmp);
01040 
01041    http_tls_cfg.enabled = 0;
01042    if (http_tls_cfg.certfile) {
01043       ast_free(http_tls_cfg.certfile);
01044    }
01045    http_tls_cfg.certfile = ast_strdup(AST_CERTFILE);
01046 
01047    if (http_tls_cfg.pvtfile) {
01048       ast_free(http_tls_cfg.pvtfile);
01049    }
01050    http_tls_cfg.pvtfile = ast_strdup("");
01051 
01052    if (http_tls_cfg.cipher) {
01053       ast_free(http_tls_cfg.cipher);
01054    }
01055    http_tls_cfg.cipher = ast_strdup("");
01056 
01057    AST_RWLIST_WRLOCK(&uri_redirects);
01058    while ((redirect = AST_RWLIST_REMOVE_HEAD(&uri_redirects, entry))) {
01059       ast_free(redirect);
01060    }
01061    AST_RWLIST_UNLOCK(&uri_redirects);
01062 
01063    ast_sockaddr_setnull(&https_desc.local_address);
01064 
01065    if (cfg) {
01066       v = ast_variable_browse(cfg, "general");
01067       for (; v; v = v->next) {
01068 
01069          /* handle tls conf */
01070          if (!ast_tls_read_conf(&http_tls_cfg, &https_desc, v->name, v->value)) {
01071             continue;
01072          }
01073 
01074          if (!strcasecmp(v->name, "enabled")) {
01075             enabled = ast_true(v->value);
01076          } else if (!strcasecmp(v->name, "enablestatic")) {
01077             newenablestatic = ast_true(v->value);
01078          } else if (!strcasecmp(v->name, "bindport")) {
01079             ast_sockaddr_set_port(&http_desc.local_address,
01080                         atoi(v->value));
01081          } else if (!strcasecmp(v->name, "bindaddr")) {
01082             if ((hp = ast_gethostbyname(v->value, &ahp))) {
01083                ast_sockaddr_to_sin(&http_desc.local_address,
01084                          &tmp);
01085                memcpy(&tmp.sin_addr, hp->h_addr, sizeof(tmp.sin_addr));
01086                ast_sockaddr_from_sin(&http_desc.local_address,
01087                            &tmp);
01088             } else {
01089                ast_log(LOG_WARNING, "Invalid bind address '%s'\n", v->value);
01090             }
01091          } else if (!strcasecmp(v->name, "prefix")) {
01092             if (!ast_strlen_zero(v->value)) {
01093                newprefix[0] = '/';
01094                ast_copy_string(newprefix + 1, v->value, sizeof(newprefix) - 1);
01095             } else {
01096                newprefix[0] = '\0';
01097             }
01098          } else if (!strcasecmp(v->name, "redirect")) {
01099             add_redirect(v->value);
01100          } else if (!strcasecmp(v->name, "sessionlimit")) {
01101             if (ast_parse_arg(v->value, PARSE_INT32|PARSE_DEFAULT|PARSE_IN_RANGE,
01102                      &session_limit, DEFAULT_SESSION_LIMIT, 1, INT_MAX)) {
01103                ast_log(LOG_WARNING, "Invalid %s '%s' at line %d of http.conf\n",
01104                      v->name, v->value, v->lineno);
01105             }
01106          } else {
01107             ast_log(LOG_WARNING, "Ignoring unknown option '%s' in http.conf\n", v->name);
01108          }
01109       }
01110 
01111       ast_config_destroy(cfg);
01112    }
01113    /* if the https address has not been set, default is the same as non secure http */
01114    ast_sockaddr_to_sin(&http_desc.local_address, &tmp);
01115    ast_sockaddr_to_sin(&https_desc.local_address, &tmp2);
01116    if (!tmp2.sin_addr.s_addr) {
01117       tmp2.sin_addr = tmp.sin_addr;
01118    }
01119    if (!tmp2.sin_port) {
01120       tmp2.sin_port = htons(DEFAULT_HTTPS_PORT);
01121    }
01122    ast_sockaddr_from_sin(&https_desc.local_address, &tmp2);
01123    if (!enabled) {
01124       ast_sockaddr_setnull(&http_desc.local_address);
01125       ast_sockaddr_setnull(&https_desc.local_address);
01126    }
01127    if (strcmp(prefix, newprefix)) {
01128       ast_copy_string(prefix, newprefix, sizeof(prefix));
01129    }
01130    enablestatic = newenablestatic;
01131    ast_tcptls_server_start(&http_desc);
01132    /* If https was enabled previously but now is not, then stop the service */
01133    if (http_tls_was_enabled && !http_tls_cfg.enabled) {
01134       ast_tcptls_server_stop(&https_desc);
01135    } else if (ast_ssl_setup(https_desc.tls_cfg)) {
01136       ast_tcptls_server_start(&https_desc);
01137    }
01138 
01139    return 0;
01140 }

static void add_redirect ( const char *  value  )  [static]

Add a new URI redirect The entries in the redirect list are sorted by length, just like the list of URI handlers.

Definition at line 962 of file http.c.

References ast_calloc, ast_log(), AST_RWLIST_EMPTY, AST_RWLIST_FIRST, AST_RWLIST_INSERT_AFTER, AST_RWLIST_INSERT_HEAD, AST_RWLIST_INSERT_TAIL, AST_RWLIST_NEXT, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, ast_skip_blanks(), ast_strdupa, http_uri_redirect::dest, http_uri_redirect::entry, LOG_WARNING, strsep(), and http_uri_redirect::target.

00963 {
00964    char *target, *dest;
00965    struct http_uri_redirect *redirect, *cur;
00966    unsigned int target_len;
00967    unsigned int total_len;
00968 
00969    dest = ast_strdupa(value);
00970    dest = ast_skip_blanks(dest);
00971    target = strsep(&dest, " ");
00972    target = ast_skip_blanks(target);
00973    target = strsep(&target, " "); /* trim trailing whitespace */
00974 
00975    if (!dest) {
00976       ast_log(LOG_WARNING, "Invalid redirect '%s'\n", value);
00977       return;
00978    }
00979 
00980    target_len = strlen(target) + 1;
00981    total_len = sizeof(*redirect) + target_len + strlen(dest) + 1;
00982 
00983    if (!(redirect = ast_calloc(1, total_len))) {
00984       return;
00985    }
00986    redirect->dest = redirect->target + target_len;
00987    strcpy(redirect->target, target);
00988    strcpy(redirect->dest, dest);
00989 
00990    AST_RWLIST_WRLOCK(&uri_redirects);
00991 
00992    target_len--; /* So we can compare directly with strlen() */
00993    if (AST_RWLIST_EMPTY(&uri_redirects)
00994       || strlen(AST_RWLIST_FIRST(&uri_redirects)->target) <= target_len ) {
00995       AST_RWLIST_INSERT_HEAD(&uri_redirects, redirect, entry);
00996       AST_RWLIST_UNLOCK(&uri_redirects);
00997 
00998       return;
00999    }
01000 
01001    AST_RWLIST_TRAVERSE(&uri_redirects, cur, entry) {
01002       if (AST_RWLIST_NEXT(cur, entry)
01003          && strlen(AST_RWLIST_NEXT(cur, entry)->target) <= target_len ) {
01004          AST_RWLIST_INSERT_AFTER(&uri_redirects, cur, redirect, entry);
01005          AST_RWLIST_UNLOCK(&uri_redirects);
01006          return;
01007       }
01008    }
01009 
01010    AST_RWLIST_INSERT_TAIL(&uri_redirects, redirect, entry);
01011 
01012    AST_RWLIST_UNLOCK(&uri_redirects);
01013 }

const char* ast_get_http_method ( enum ast_http_method  method  ) 

Return http method name string.

Since:
1.8

Definition at line 151 of file http.c.

References ARRAY_LEN, ast_http_methods_text, and ast_cfhttp_methods_text::text.

00152 {
00153    int x;
00154 
00155    for (x = 0; x < ARRAY_LEN(ast_http_methods_text); x++) {
00156       if (ast_http_methods_text[x].method == method) {
00157          return ast_http_methods_text[x].text;
00158       }
00159    }
00160 
00161    return NULL;
00162 }

void ast_http_auth ( struct ast_tcptls_session_instance ser,
const char *  realm,
const unsigned long  nonce,
const unsigned long  opaque,
int  stale,
const char *  text 
)

Send http "401 Unauthorized" response and close socket.

Definition at line 465 of file http.c.

References ast_free, ast_http_send(), AST_HTTP_UNKNOWN, ast_str_create(), and ast_str_set().

00468 {
00469    struct ast_str *http_headers = ast_str_create(128);
00470    struct ast_str *out = ast_str_create(512);
00471 
00472    if (!http_headers || !out) {
00473       ast_free(http_headers);
00474       ast_free(out);
00475       return;
00476    }
00477 
00478    ast_str_set(&http_headers, 0,
00479       "WWW-authenticate: Digest algorithm=MD5, realm=\"%s\", nonce=\"%08lx\", qop=\"auth\", opaque=\"%08lx\"%s\r\n"
00480       "Content-type: text/html\r\n",
00481       realm ? realm : "Asterisk",
00482       nonce,
00483       opaque,
00484       stale ? ", stale=true" : "");
00485 
00486    ast_str_set(&out, 0,
00487       "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\r\n"
00488       "<html><head>\r\n"
00489       "<title>401 Unauthorized</title>\r\n"
00490       "</head><body>\r\n"
00491       "<h1>401 Unauthorized</h1>\r\n"
00492       "<p>%s</p>\r\n"
00493       "<hr />\r\n"
00494       "<address>Asterisk Server</address>\r\n"
00495       "</body></html>\r\n",
00496       text ? text : "");
00497 
00498    ast_http_send(ser, AST_HTTP_UNKNOWN, 401, "Unauthorized", http_headers, out, 0, 0);
00499    return;
00500 }

void ast_http_error ( struct ast_tcptls_session_instance ser,
int  status_code,
const char *  status_title,
const char *  text 
)

Send HTTP error message and close socket.

Definition at line 503 of file http.c.

References ast_free, ast_http_send(), AST_HTTP_UNKNOWN, ast_str_create(), and ast_str_set().

Referenced by auth_http_callback(), generic_http_callback(), handle_uri(), http_post_callback(), httpd_helper_thread(), httpstatus_callback(), phoneprov_callback(), and static_callback().

00504 {
00505    struct ast_str *http_headers = ast_str_create(40);
00506    struct ast_str *out = ast_str_create(256);
00507 
00508    if (!http_headers || !out) {
00509       ast_free(http_headers);
00510       ast_free(out);
00511       return;
00512    }
00513 
00514    ast_str_set(&http_headers, 0, "Content-type: text/html\r\n");
00515 
00516    ast_str_set(&out, 0,
00517       "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\">\r\n"
00518       "<html><head>\r\n"
00519       "<title>%d %s</title>\r\n"
00520       "</head><body>\r\n"
00521       "<h1>%s</h1>\r\n"
00522       "<p>%s</p>\r\n"
00523       "<hr />\r\n"
00524       "<address>Asterisk Server</address>\r\n"
00525       "</body></html>\r\n",
00526          status_code, status_title, status_title, text);
00527 
00528    ast_http_send(ser, AST_HTTP_UNKNOWN, status_code, status_title, http_headers, out, 0, 0);
00529    return;
00530 }

const char* ast_http_ftype2mtype ( const char *  ftype  ) 

Return mime type based on extension.

Parameters:
ftype filename extension
Returns:
String containing associated MIME type
Since:
1.8

Definition at line 164 of file http.c.

References ARRAY_LEN, ext, and mimetypes.

Referenced by static_callback().

00165 {
00166    int x;
00167 
00168    if (ftype) {
00169       for (x = 0; x < ARRAY_LEN(mimetypes); x++) {
00170          if (!strcasecmp(ftype, mimetypes[x].ext)) {
00171             return mimetypes[x].mtype;
00172          }
00173       }
00174    }
00175    return NULL;
00176 }

struct ast_variable* ast_http_get_cookies ( struct ast_variable headers  ) 

Get cookie from Request headers.

Definition at line 839 of file http.c.

References ast_strdupa, ast_variables_destroy(), ast_variable::name, ast_variable::next, parse_cookies(), and ast_variable::value.

Referenced by ast_http_manid_from_vars(), generic_http_callback(), http_post_callback(), and httpstatus_callback().

00840 {
00841    struct ast_variable *v, *cookies=NULL;
00842 
00843    for (v = headers; v; v = v->next) {
00844       if (!strncasecmp(v->name, "Cookie", 6)) {
00845          char *tmp = ast_strdupa(v->value);
00846          if (cookies) {
00847             ast_variables_destroy(cookies);
00848          }
00849 
00850          cookies = parse_cookies(tmp);
00851       }
00852    }
00853    return cookies;
00854 }

struct ast_variable* ast_http_get_post_vars ( struct ast_tcptls_session_instance ser,
struct ast_variable headers 
)

Get post variables from client Request Entity-Body, if content type is application/x-www-form-urlencoded.

Parameters:
ser TCP/TLS session object
headers List of HTTP headers
Returns:
List of variables within the POST body
Note:
Since returned list is malloc'd, list should be free'd by the calling function
Since:
1.8

Definition at line 619 of file http.c.

References ast_variable::name, ast_variable::next, ast_variable::value, and var.

00621 {
00622    int content_length = 0;
00623    struct ast_variable *v, *post_vars=NULL, *prev = NULL;
00624    char *buf, *var, *val;
00625 
00626    for (v = headers; v; v = v->next) {
00627       if (!strcasecmp(v->name, "Content-Type")) {
00628          if (strcasecmp(v->value, "application/x-www-form-urlencoded")) {
00629             return NULL;
00630          }
00631          break;
00632       }
00633    }
00634 
00635    for (v = headers; v; v = v->next) {
00636       if (!strcasecmp(v->name, "Content-Length")) {
00637          content_length = atoi(v->value) + 1;
00638          break;
00639       }
00640    }
00641 
00642    if (!content_length) {
00643       return NULL;
00644    }
00645 
00646    if (!(buf = alloca(content_length))) {
00647       return NULL;
00648    }
00649    if (!fgets(buf, content_length, ser->f)) {
00650       return NULL;
00651    }
00652 
00653    while ((val = strsep(&buf, "&"))) {
00654       var = strsep(&val, "=");
00655       if (val) {
00656          http_decode(val);
00657       } else  {
00658          val = "";
00659       }
00660       http_decode(var);
00661       if ((v = ast_variable_new(var, val, ""))) {
00662          if (post_vars) {
00663             prev->next = v;
00664          } else {
00665             post_vars = v;
00666          }
00667          prev = v;
00668       }
00669    }
00670    return post_vars;
00671 }

int ast_http_init ( void   ) 

Provided by http.c

Definition at line 1209 of file http.c.

References __ast_http_load(), ARRAY_LEN, ast_cli_register_multiple(), ast_http_uri_link(), cli_http, staticuri, and statusuri.

Referenced by main().

uint32_t ast_http_manid_from_vars ( struct ast_variable headers  ) 

Return manager id, if exist, from request headers.

Parameters:
headers List of HTTP headers
Returns:
32-bit associated manager session identifier
Since:
1.8

Definition at line 178 of file http.c.

References ast_http_get_cookies(), ast_variable::name, ast_variable::next, and ast_variable::value.

Referenced by http_post_callback(), and static_callback().

00179 {
00180    uint32_t mngid = 0;
00181    struct ast_variable *v, *cookies;
00182 
00183    cookies = ast_http_get_cookies(headers);
00184    for (v = cookies; v; v = v->next) {
00185       if (!strcasecmp(v->name, "mansession_id")) {
00186          sscanf(v->value, "%30x", &mngid);
00187          break;
00188       }
00189    }
00190    if (cookies) {
00191       ast_variables_destroy(cookies);
00192    }
00193    return mngid;
00194 }

void ast_http_prefix ( char *  buf,
int  len 
)

Return the current prefix.

Parameters:
[out] buf destination buffer for previous
[in] len length of prefix to copy
Since:
1.6.1

Definition at line 196 of file http.c.

References ast_copy_string().

00197 {
00198    if (buf) {
00199       ast_copy_string(buf, prefix, len);
00200    }
00201 }

int ast_http_reload ( void   ) 

Provided by http.c

Definition at line 1200 of file http.c.

References __ast_http_load().

01201 {
01202    return __ast_http_load(1);
01203 }

void ast_http_send ( struct ast_tcptls_session_instance ser,
enum ast_http_method  method,
int  status_code,
const char *  status_title,
struct ast_str http_header,
struct ast_str out,
const int  fd,
unsigned int  static_content 
)

Generic function for sending http/1.1 response.

Parameters:
ser TCP/TLS session object
method GET/POST/HEAD
status_code HTTP response code (200/401/403/404/500)
status_title English equivalent to the status_code parameter
http_header An ast_str object containing all headers
out An ast_str object containing the body of the response
fd If out is NULL, a file descriptor where the body of the response is held (otherwise -1)
static_content Zero if the content is dynamically generated and should not be cached; nonzero otherwise
Note:
Function determines the HTTP response header from status_code, status_header, and http_header.
Extra HTTP headers MUST be present only in the http_header argument. The argument "out" should contain only content of the response (no headers!).

HTTP content can be constructed from the argument "out", if it is not NULL; otherwise, the function will read content from FD.

This function calculates the content-length http header itself.

Both the http_header and out arguments will be freed by this function; however, if FD is open, it will remain open.

Since:
1.8

Definition at line 391 of file http.c.

References ast_free, ast_get_version(), AST_HTTP_HEAD, ast_localtime(), ast_log(), ast_str_buffer(), ast_strftime(), ast_tvnow(), errno, ast_tcptls_session_instance::f, len(), and LOG_WARNING.

Referenced by ast_http_auth(), ast_http_error(), handle_uri(), httpstatus_callback(), and phoneprov_callback().

00395 {
00396    struct timeval now = ast_tvnow();
00397    struct ast_tm tm;
00398    char timebuf[80];
00399    int content_length = 0;
00400 
00401    if (!ser || 0 == ser->f) {
00402       return;
00403    }
00404 
00405    ast_strftime(timebuf, sizeof(timebuf), "%a, %d %b %Y %H:%M:%S GMT", ast_localtime(&now, &tm, "GMT"));
00406 
00407    /* calc content length */
00408    if (out) {
00409       content_length += strlen(ast_str_buffer(out));
00410    }
00411 
00412    if (fd) {
00413       content_length += lseek(fd, 0, SEEK_END);
00414       lseek(fd, 0, SEEK_SET);
00415    }
00416 
00417    /* send http header */
00418    fprintf(ser->f, "HTTP/1.1 %d %s\r\n"
00419       "Server: Asterisk/%s\r\n"
00420       "Date: %s\r\n"
00421       "Connection: close\r\n"
00422       "%s"
00423       "Content-Length: %d\r\n"
00424       "%s"
00425       "\r\n",
00426       status_code, status_title ? status_title : "OK",
00427       ast_get_version(),
00428       timebuf,
00429       static_content ? "" : "Cache-Control: no-cache, no-store\r\n",
00430       content_length,
00431       http_header ? ast_str_buffer(http_header) : ""
00432       );
00433 
00434    /* send content */
00435    if (method != AST_HTTP_HEAD || status_code >= 400) {
00436       if (out) {
00437          fprintf(ser->f, "%s", ast_str_buffer(out));
00438       }
00439 
00440       if (fd) {
00441          char buf[256];
00442          int len;
00443          while ((len = read(fd, buf, sizeof(buf))) > 0) {
00444             if (fwrite(buf, len, 1, ser->f) != 1) {
00445                ast_log(LOG_WARNING, "fwrite() failed: %s\n", strerror(errno));
00446                break;
00447             }
00448          }
00449       }
00450    }
00451 
00452    if (http_header) {
00453       ast_free(http_header);
00454    }
00455    if (out) {
00456       ast_free(out);
00457    }
00458 
00459    fclose(ser->f);
00460    ser->f = 0;
00461    return;
00462 }

int ast_http_uri_link ( struct ast_http_uri urih  ) 

Register a URI handler.

They are sorted by length of the string, not alphabetically. Duplicate entries are not replaced, but the insertion order (using <= and not just <) makes sure that more recent insertions hide older ones. On a lookup, we just scan the list and stop at the first matching entry.

Definition at line 541 of file http.c.

References AST_RWLIST_EMPTY, AST_RWLIST_FIRST, AST_RWLIST_INSERT_AFTER, AST_RWLIST_INSERT_HEAD, AST_RWLIST_INSERT_TAIL, AST_RWLIST_NEXT, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, ast_http_uri::entry, len(), and ast_http_uri::uri.

Referenced by __ast_http_post_load(), ast_http_init(), and load_module().

00542 {
00543    struct ast_http_uri *uri;
00544    int len = strlen(urih->uri);
00545 
00546    AST_RWLIST_WRLOCK(&uris);
00547 
00548    if ( AST_RWLIST_EMPTY(&uris) || strlen(AST_RWLIST_FIRST(&uris)->uri) <= len ) {
00549       AST_RWLIST_INSERT_HEAD(&uris, urih, entry);
00550       AST_RWLIST_UNLOCK(&uris);
00551       return 0;
00552    }
00553 
00554    AST_RWLIST_TRAVERSE(&uris, uri, entry) {
00555       if (AST_RWLIST_NEXT(uri, entry) &&
00556          strlen(AST_RWLIST_NEXT(uri, entry)->uri) <= len) {
00557          AST_RWLIST_INSERT_AFTER(&uris, uri, urih, entry);
00558          AST_RWLIST_UNLOCK(&uris);
00559 
00560          return 0;
00561       }
00562    }
00563 
00564    AST_RWLIST_INSERT_TAIL(&uris, urih, entry);
00565 
00566    AST_RWLIST_UNLOCK(&uris);
00567 
00568    return 0;
00569 }

void ast_http_uri_unlink ( struct ast_http_uri urih  ) 

Unregister a URI handler.

Definition at line 571 of file http.c.

References AST_RWLIST_REMOVE, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, and ast_http_uri::entry.

Referenced by unload_module().

00572 {
00573    AST_RWLIST_WRLOCK(&uris);
00574    AST_RWLIST_REMOVE(&uris, urih, entry);
00575    AST_RWLIST_UNLOCK(&uris);
00576 }

void ast_http_uri_unlink_all_with_key ( const char *  key  ) 

Unregister all handlers with matching key.

Definition at line 578 of file http.c.

References ast_free, AST_RWLIST_REMOVE_CURRENT, AST_RWLIST_TRAVERSE_SAFE_BEGIN, AST_RWLIST_TRAVERSE_SAFE_END, AST_RWLIST_UNLOCK, AST_RWLIST_WRLOCK, ast_http_uri::data, ast_http_uri::dmallocd, ast_http_uri::entry, ast_http_uri::key, and ast_http_uri::mallocd.

Referenced by __ast_http_post_load(), and unload_module().

00579 {
00580    struct ast_http_uri *urih;
00581    AST_RWLIST_WRLOCK(&uris);
00582    AST_RWLIST_TRAVERSE_SAFE_BEGIN(&uris, urih, entry) {
00583       if (!strcmp(urih->key, key)) {
00584          AST_RWLIST_REMOVE_CURRENT(entry);
00585          if (urih->dmallocd) {
00586             ast_free(urih->data);
00587          }
00588          if (urih->mallocd) {
00589             ast_free(urih);
00590          }
00591       }
00592    }
00593    AST_RWLIST_TRAVERSE_SAFE_END;
00594    AST_RWLIST_UNLOCK(&uris);
00595 }

static char* handle_show_http ( struct ast_cli_entry e,
int  cmd,
struct ast_cli_args a 
) [static]

Definition at line 1142 of file http.c.

References ast_cli_args::argc, ast_cli(), ast_inet_ntoa(), AST_RWLIST_EMPTY, AST_RWLIST_RDLOCK, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, ast_sockaddr_to_sin, CLI_GENERATE, CLI_INIT, CLI_SHOWUSAGE, CLI_SUCCESS, ast_cli_entry::command, ast_http_uri::description, http_uri_redirect::dest, ast_tls_config::enabled, ast_cli_args::fd, ast_http_uri::has_subtree, http_desc, http_tls_cfg, https_desc, ast_tcptls_session_args::old_address, http_uri_redirect::target, ast_http_uri::uri, and ast_cli_entry::usage.

01143 {
01144    struct ast_http_uri *urih;
01145    struct http_uri_redirect *redirect;
01146    struct sockaddr_in tmp;
01147 
01148    switch (cmd) {
01149    case CLI_INIT:
01150       e->command = "http show status";
01151       e->usage =
01152          "Usage: http show status\n"
01153          "       Lists status of internal HTTP engine\n";
01154       return NULL;
01155    case CLI_GENERATE:
01156       return NULL;
01157    }
01158 
01159    if (a->argc != 3) {
01160       return CLI_SHOWUSAGE;
01161    }
01162    ast_cli(a->fd, "HTTP Server Status:\n");
01163    ast_cli(a->fd, "Prefix: %s\n", prefix);
01164    ast_sockaddr_to_sin(&http_desc.old_address, &tmp);
01165    if (!tmp.sin_family) {
01166       ast_cli(a->fd, "Server Disabled\n\n");
01167    } else {
01168       ast_cli(a->fd, "Server Enabled and Bound to %s:%d\n\n",
01169          ast_inet_ntoa(tmp.sin_addr), ntohs(tmp.sin_port));
01170       if (http_tls_cfg.enabled) {
01171          ast_sockaddr_to_sin(&https_desc.old_address, &tmp);
01172          ast_cli(a->fd, "HTTPS Server Enabled and Bound to %s:%d\n\n",
01173             ast_inet_ntoa(tmp.sin_addr),
01174             ntohs(tmp.sin_port));
01175       }
01176    }
01177 
01178    ast_cli(a->fd, "Enabled URI's:\n");
01179    AST_RWLIST_RDLOCK(&uris);
01180    if (AST_RWLIST_EMPTY(&uris)) {
01181       ast_cli(a->fd, "None.\n");
01182    } else {
01183       AST_RWLIST_TRAVERSE(&uris, urih, entry)
01184          ast_cli(a->fd, "%s/%s%s => %s\n", prefix, urih->uri, (urih->has_subtree ? "/..." : "" ), urih->description);
01185    }
01186    AST_RWLIST_UNLOCK(&uris);
01187 
01188    ast_cli(a->fd, "\nEnabled Redirects:\n");
01189    AST_RWLIST_RDLOCK(&uri_redirects);
01190    AST_RWLIST_TRAVERSE(&uri_redirects, redirect, entry)
01191       ast_cli(a->fd, "  %s => %s\n", redirect->target, redirect->dest);
01192    if (AST_RWLIST_EMPTY(&uri_redirects)) {
01193       ast_cli(a->fd, "  None.\n");
01194    }
01195    AST_RWLIST_UNLOCK(&uri_redirects);
01196 
01197    return CLI_SUCCESS;
01198 }

static int handle_uri ( struct ast_tcptls_session_instance ser,
char *  uri,
enum ast_http_method  method,
struct ast_variable headers 
) [static]

Definition at line 673 of file http.c.

References ast_debug, ast_http_error(), ast_http_send(), AST_RWLIST_RDLOCK, AST_RWLIST_TRAVERSE, AST_RWLIST_UNLOCK, ast_str_create(), ast_str_set(), ast_variable_new(), ast_variables_destroy(), ast_http_uri::callback, cleanup(), http_uri_redirect::dest, http_uri_redirect::entry, ast_http_uri::has_subtree, http_decode(), strsep(), http_uri_redirect::target, ast_http_uri::uri, and var.

Referenced by httpd_helper_thread().

00675 {
00676    char *c;
00677    int res = -1;
00678    char *params = uri;
00679    struct ast_http_uri *urih = NULL;
00680    int l;
00681    struct ast_variable *get_vars = NULL, *v, *prev = NULL;
00682    struct http_uri_redirect *redirect;
00683 
00684    ast_debug(2, "HTTP Request URI is %s \n", uri);
00685 
00686    strsep(&params, "?");
00687    /* Extract arguments from the request and store them in variables. */
00688    if (params) {
00689       char *var, *val;
00690 
00691       while ((val = strsep(&params, "&"))) {
00692          var = strsep(&val, "=");
00693          if (val) {
00694             http_decode(val);
00695          } else  {
00696             val = "";
00697          }
00698          http_decode(var);
00699          if ((v = ast_variable_new(var, val, ""))) {
00700             if (get_vars) {
00701                prev->next = v;
00702             } else {
00703                get_vars = v;
00704             }
00705             prev = v;
00706          }
00707       }
00708    }
00709    http_decode(uri);
00710 
00711    AST_RWLIST_RDLOCK(&uri_redirects);
00712    AST_RWLIST_TRAVERSE(&uri_redirects, redirect, entry) {
00713       if (!strcasecmp(uri, redirect->target)) {
00714          struct ast_str *http_header = ast_str_create(128);
00715          ast_str_set(&http_header, 0, "Location: %s\r\n", redirect->dest);
00716          ast_http_send(ser, method, 302, "Moved Temporarily", http_header, NULL, 0, 0);
00717 
00718          break;
00719       }
00720    }
00721    AST_RWLIST_UNLOCK(&uri_redirects);
00722    if (redirect) {
00723       goto cleanup;
00724    }
00725 
00726    /* We want requests to start with the (optional) prefix and '/' */
00727    l = strlen(prefix);
00728    if (!strncasecmp(uri, prefix, l) && uri[l] == '/') {
00729       uri += l + 1;
00730       /* scan registered uris to see if we match one. */
00731       AST_RWLIST_RDLOCK(&uris);
00732       AST_RWLIST_TRAVERSE(&uris, urih, entry) {
00733          ast_debug(2, "match request [%s] with handler [%s] len %d\n", uri, urih->uri, l);
00734          l = strlen(urih->uri);
00735          c = uri + l;   /* candidate */
00736          if (strncasecmp(urih->uri, uri, l) /* no match */
00737              || (*c && *c != '/')) { /* substring */
00738             continue;
00739          }
00740          if (*c == '/') {
00741             c++;
00742          }
00743          if (!*c || urih->has_subtree) {
00744             uri = c;
00745             break;
00746          }
00747       }
00748       AST_RWLIST_UNLOCK(&uris);
00749    }
00750    if (urih) {
00751       res = urih->callback(ser, urih, uri, method, get_vars, headers);
00752    } else {
00753       ast_http_error(ser, 404, "Not Found", "The requested URL was not found on this server.");
00754    }
00755 
00756 cleanup:
00757    ast_variables_destroy(get_vars);
00758    return res;
00759 }

static void http_decode ( char *  s  )  [static]

Definition at line 602 of file http.c.

References ast_uri_decode().

Referenced by handle_uri().

00603 {
00604    char *t;
00605 
00606    for (t = s; *t; t++) {
00607       if (*t == '+') {
00608          *t = ' ';
00609       }
00610    }
00611 
00612    ast_uri_decode(s);
00613 }

static void * httpd_helper_thread ( void *  arg  )  [static]

Definition at line 857 of file http.c.

References ao2_ref, ast_atomic_fetchadd_int(), ast_http_error(), AST_HTTP_GET, AST_HTTP_HEAD, AST_HTTP_POST, AST_HTTP_PUT, AST_HTTP_UNKNOWN, ast_skip_blanks(), ast_skip_nonblanks(), ast_strlen_zero(), ast_trim_blanks(), ast_variable_new(), ast_variables_destroy(), ast_tcptls_session_instance::f, handle_uri(), name, ast_variable::next, strsep(), and value.

00858 {
00859    char buf[4096];
00860    char header_line[4096];
00861    struct ast_tcptls_session_instance *ser = data;
00862    struct ast_variable *headers = NULL;
00863    struct ast_variable *tail = headers;
00864    char *uri, *method;
00865    enum ast_http_method http_method = AST_HTTP_UNKNOWN;
00866 
00867    if (ast_atomic_fetchadd_int(&session_count, +1) >= session_limit) {
00868       goto done;
00869    }
00870 
00871    if (!fgets(buf, sizeof(buf), ser->f)) {
00872       goto done;
00873    }
00874 
00875    /* Get method */
00876    method = ast_skip_blanks(buf);
00877    uri = ast_skip_nonblanks(method);
00878    if (*uri) {
00879       *uri++ = '\0';
00880    }
00881 
00882    if (!strcasecmp(method,"GET")) {
00883       http_method = AST_HTTP_GET;
00884    } else if (!strcasecmp(method,"POST")) {
00885       http_method = AST_HTTP_POST;
00886    } else if (!strcasecmp(method,"HEAD")) {
00887       http_method = AST_HTTP_HEAD;
00888    } else if (!strcasecmp(method,"PUT")) {
00889       http_method = AST_HTTP_PUT;
00890    }
00891 
00892    uri = ast_skip_blanks(uri);   /* Skip white space */
00893 
00894    if (*uri) {       /* terminate at the first blank */
00895       char *c = ast_skip_nonblanks(uri);
00896 
00897       if (*c) {
00898          *c = '\0';
00899       }
00900    }
00901 
00902    /* process "Request Headers" lines */
00903    while (fgets(header_line, sizeof(header_line), ser->f)) {
00904       char *name, *value;
00905 
00906       /* Trim trailing characters */
00907       ast_trim_blanks(header_line);
00908       if (ast_strlen_zero(header_line)) {
00909          break;
00910       }
00911 
00912       value = header_line;
00913       name = strsep(&value, ":");
00914       if (!value) {
00915          continue;
00916       }
00917 
00918       value = ast_skip_blanks(value);
00919       if (ast_strlen_zero(value) || ast_strlen_zero(name)) {
00920          continue;
00921       }
00922 
00923       ast_trim_blanks(name);
00924 
00925       if (!headers) {
00926          headers = ast_variable_new(name, value, __FILE__);
00927          tail = headers;
00928       } else {
00929          tail->next = ast_variable_new(name, value, __FILE__);
00930          tail = tail->next;
00931       }
00932    }
00933 
00934    if (!*uri) {
00935       ast_http_error(ser, 400, "Bad Request", "Invalid Request");
00936       goto done;
00937    }
00938 
00939    handle_uri(ser, uri, http_method, headers);
00940 
00941 done:
00942    ast_atomic_fetchadd_int(&session_count, -1);
00943 
00944    /* clean up all the header information */
00945    if (headers) {
00946       ast_variables_destroy(headers);
00947    }
00948 
00949    if (ser->f) {
00950       fclose(ser->f);
00951    }
00952    ao2_ref(ser, -1);
00953    ser = NULL;
00954    return NULL;
00955 }

static int httpstatus_callback ( struct ast_tcptls_session_instance ser,
const struct ast_http_uri urih,
const char *  uri,
enum ast_http_method  method,
struct ast_variable get_vars,
struct ast_variable headers 
) [static]

Definition at line 321 of file http.c.

References ast_http_error(), AST_HTTP_GET, ast_http_get_cookies(), AST_HTTP_HEAD, ast_http_send(), ast_sockaddr_stringify_addr(), ast_sockaddr_stringify_port(), ast_str_append(), ast_str_create(), ast_variables_destroy(), ast_tls_config::enabled, http_desc, http_tls_cfg, https_desc, ast_variable::name, ast_variable::next, ast_tcptls_session_args::old_address, and ast_variable::value.

00325 {
00326    struct ast_str *out;
00327    struct ast_variable *v, *cookies = NULL;
00328 
00329    if (method != AST_HTTP_GET && method != AST_HTTP_HEAD) {
00330       ast_http_error(ser, 501, "Not Implemented", "Attempt to use unimplemented / unsupported method");
00331       return -1;
00332    }
00333 
00334    if ( (out = ast_str_create(512)) == NULL) {
00335       return -1;
00336    }
00337 
00338    ast_str_append(&out, 0,
00339       "<title>Asterisk HTTP Status</title>\r\n"
00340       "<body bgcolor=\"#ffffff\">\r\n"
00341       "<table bgcolor=\"#f1f1f1\" align=\"center\"><tr><td bgcolor=\"#e0e0ff\" colspan=\"2\" width=\"500\">\r\n"
00342       "<h2>&nbsp;&nbsp;Asterisk&trade; HTTP Status</h2></td></tr>\r\n");
00343 
00344    ast_str_append(&out, 0, "<tr><td><i>Prefix</i></td><td><b>%s</b></td></tr>\r\n", prefix);
00345    ast_str_append(&out, 0, "<tr><td><i>Bind Address</i></td><td><b>%s</b></td></tr>\r\n",
00346              ast_sockaddr_stringify_addr(&http_desc.old_address));
00347    ast_str_append(&out, 0, "<tr><td><i>Bind Port</i></td><td><b>%s</b></td></tr>\r\n",
00348              ast_sockaddr_stringify_port(&http_desc.old_address));
00349    if (http_tls_cfg.enabled) {
00350       ast_str_append(&out, 0, "<tr><td><i>SSL Bind Port</i></td><td><b>%s</b></td></tr>\r\n",
00351                 ast_sockaddr_stringify_port(&https_desc.old_address));
00352    }
00353    ast_str_append(&out, 0, "<tr><td colspan=\"2\"><hr></td></tr>\r\n");
00354    for (v = get_vars; v; v = v->next) {
00355       ast_str_append(&out, 0, "<tr><td><i>Submitted GET Variable '%s'</i></td><td>%s</td></tr>\r\n", v->name, v->value);
00356    }
00357    ast_str_append(&out, 0, "<tr><td colspan=\"2\"><hr></td></tr>\r\n");
00358 
00359    cookies = ast_http_get_cookies(headers);
00360    for (v = cookies; v; v = v->next) {
00361       ast_str_append(&out, 0, "<tr><td><i>Cookie '%s'</i></td><td>%s</td></tr>\r\n", v->name, v->value);
00362    }
00363    ast_variables_destroy(cookies);
00364 
00365    ast_str_append(&out, 0, "</table><center><font size=\"-1\"><i>Asterisk and Digium are registered trademarks of Digium, Inc.</i></font></center></body>\r\n");
00366    ast_http_send(ser, method, 200, NULL, NULL, out, 0, 0);
00367    return 0;
00368 }

static struct ast_variable* parse_cookies ( char *  cookies  )  [static]

replacement read/write functions for SSL support. We use wrappers rather than SSL_read/SSL_write directly so we can put in some debugging.

Definition at line 806 of file http.c.

References ast_debug, ast_strip(), ast_strip_quoted(), ast_strlen_zero(), ast_variable_new(), name, strsep(), and var.

Referenced by ast_http_get_cookies().

00807 {
00808    char *cur;
00809    struct ast_variable *vars = NULL, *var;
00810 
00811    while ((cur = strsep(&cookies, ";"))) {
00812       char *name, *val;
00813 
00814       name = val = cur;
00815       strsep(&val, "=");
00816 
00817       if (ast_strlen_zero(name) || ast_strlen_zero(val)) {
00818          continue;
00819       }
00820 
00821       name = ast_strip(name);
00822       val = ast_strip_quoted(val, "\"", "\"");
00823 
00824       if (ast_strlen_zero(name) || ast_strlen_zero(val)) {
00825          continue;
00826       }
00827 
00828       ast_debug(1, "HTTP Cookie, Name: '%s'  Value: '%s'\n", name, val);
00829 
00830       var = ast_variable_new(name, val, __FILE__);
00831       var->next = vars;
00832       vars = var;
00833    }
00834 
00835    return vars;
00836 }

static int static_callback ( struct ast_tcptls_session_instance ser,
const struct ast_http_uri urih,
const char *  uri,
enum ast_http_method  method,
struct ast_variable get_vars,
struct ast_variable headers 
) [static]

Definition at line 203 of file http.c.

References ast_config_AST_DATA_DIR, ast_http_error(), ast_http_ftype2mtype(), AST_HTTP_GET, AST_HTTP_HEAD, ast_http_manid_from_vars(), ast_localtime(), ast_strftime(), ast_strlen_zero(), astman_is_authed(), len(), mtype, ast_variable::name, ast_variable::next, S_OR, and ast_variable::value.

00207 {
00208    char *path;
00209    const char *ftype;
00210    const char *mtype;
00211    char wkspace[80];
00212    struct stat st;
00213    int len;
00214    int fd;
00215    struct ast_str *http_header;
00216    struct timeval tv;
00217    struct ast_tm tm;
00218    char timebuf[80], etag[23];
00219    struct ast_variable *v;
00220    int not_modified = 0;
00221 
00222    if (method != AST_HTTP_GET && method != AST_HTTP_HEAD) {
00223       ast_http_error(ser, 501, "Not Implemented", "Attempt to use unimplemented / unsupported method");
00224       return -1;
00225    }
00226 
00227    /* Yuck.  I'm not really sold on this, but if you don't deliver static content it makes your configuration
00228       substantially more challenging, but this seems like a rather irritating feature creep on Asterisk. */
00229    if (!enablestatic || ast_strlen_zero(uri)) {
00230       goto out403;
00231    }
00232 
00233    /* Disallow any funny filenames at all */
00234    if ((uri[0] < 33) || strchr("./|~@#$%^&*() \t", uri[0])) {
00235       goto out403;
00236    }
00237 
00238    if (strstr(uri, "/..")) {
00239       goto out403;
00240    }
00241 
00242    if ((ftype = strrchr(uri, '.'))) {
00243       ftype++;
00244    }
00245 
00246    if (!(mtype = ast_http_ftype2mtype(ftype))) {
00247       snprintf(wkspace, sizeof(wkspace), "text/%s", S_OR(ftype, "plain"));
00248    }
00249 
00250    /* Cap maximum length */
00251    if ((len = strlen(uri) + strlen(ast_config_AST_DATA_DIR) + strlen("/static-http/") + 5) > 1024) {
00252       goto out403;
00253    }
00254 
00255    path = alloca(len);
00256    sprintf(path, "%s/static-http/%s", ast_config_AST_DATA_DIR, uri);
00257    if (stat(path, &st)) {
00258       goto out404;
00259    }
00260 
00261    if (S_ISDIR(st.st_mode)) {
00262       goto out404;
00263    }
00264 
00265    fd = open(path, O_RDONLY);
00266    if (fd < 0) {
00267       goto out403;
00268    }
00269 
00270    if (strstr(path, "/private/") && !astman_is_authed(ast_http_manid_from_vars(headers))) {
00271       goto out403;
00272    }
00273 
00274    /* make "Etag:" http header value */
00275    snprintf(etag, sizeof(etag), "\"%ld\"", (long)st.st_mtime);
00276 
00277    /* make "Last-Modified:" http header value */
00278    tv.tv_sec = st.st_mtime;
00279    tv.tv_usec = 0;
00280    ast_strftime(timebuf, sizeof(timebuf), "%a, %d %b %Y %H:%M:%S GMT", ast_localtime(&tv, &tm, "GMT"));
00281 
00282    /* check received "If-None-Match" request header and Etag value for file */
00283    for (v = headers; v; v = v->next) {
00284       if (!strcasecmp(v->name, "If-None-Match")) {
00285          if (!strcasecmp(v->value, etag)) {
00286             not_modified = 1;
00287          }
00288          break;
00289       }
00290    }
00291 
00292    if ( (http_header = ast_str_create(255)) == NULL) {
00293       return -1;
00294    }
00295 
00296    ast_str_set(&http_header, 0, "Content-type: %s\r\n"
00297       "ETag: %s\r\n"
00298       "Last-Modified: %s\r\n",
00299       mtype,
00300       etag,
00301       timebuf);
00302 
00303    /* ast_http_send() frees http_header, so we don't need to do it before returning */
00304    if (not_modified) {
00305       ast_http_send(ser, method, 304, "Not Modified", http_header, NULL, 0, 1);
00306    } else {
00307       ast_http_send(ser, method, 200, NULL, http_header, NULL, fd, 1); /* static content flag is set */
00308    }
00309    close(fd);
00310    return 0;
00311 
00312 out404:
00313    ast_http_error(ser, 404, "Not Found", "The requested URL was not found on this server.");
00314    return -1;
00315 
00316 out403:
00317    ast_http_error(ser, 403, "Access Denied", "You do not have permission to access the requested URL.");
00318    return -1;
00319 }


Variable Documentation

struct ast_cfhttp_methods_text ast_http_methods_text[] [static]

Referenced by ast_get_http_method().

struct ast_cli_entry cli_http[] [static]

Initial value:

 {
   { .handler =  handle_show_http , .summary =  "Display HTTP server status" ,__VA_ARGS__ },
}

Definition at line 1205 of file http.c.

Referenced by ast_http_init().

int enablestatic [static]

Definition at line 106 of file http.c.

const char* ext

Definition at line 110 of file http.c.

Referenced by ast_filehelper(), ast_http_ftype2mtype(), ast_rtp_read(), cli_console_dial(), common_exec(), console_transfer(), do_directory(), exts_compare(), handle_cli_dialplan_save(), iax_park_thread(), misdn_call(), misdn_request(), mixmonitor_thread(), moh_scan_files(), oh323_request(), pbx_load_config(), pbx_load_users(), pvalGotoSetTarget(), record_exec(), register_exten(), register_peer_exten(), sig_pri_call(), sig_pri_extract_called_num_subaddr(), sip_park_thread(), sip_request_call(), and unregister_exten().

struct ast_tcptls_session_args http_desc [static]

we have up to two accepting threads, one for http, one for https

Definition at line 82 of file http.c.

Referenced by __ast_http_load(), handle_show_http(), and httpstatus_callback().

struct ast_tls_config http_tls_cfg [static]

Definition at line 75 of file http.c.

Referenced by __ast_http_load(), handle_show_http(), and httpstatus_callback().

struct ast_tcptls_session_args https_desc [static]

Definition at line 92 of file http.c.

Referenced by __ast_http_load(), handle_show_http(), and httpstatus_callback().

struct { ... } mimetypes[] [static]

Limit the kinds of files we're willing to serve up.

Referenced by ast_http_ftype2mtype().

const char* mtype

Definition at line 111 of file http.c.

Referenced by static_callback().

char prefix[MAX_PREFIX] [static]

Definition at line 105 of file http.c.

Referenced by _while_exec(), aoc_d_event(), aoc_e_event(), aoc_s_event(), ast_db_deltree(), ast_db_gettree(), ast_remotecontrol(), exec_clearhash(), handle_cli_database_show(), hashkeys_read(), hashkeys_read2(), shared_read(), shared_write(), sip_show_settings(), and while_continue_exec().

int session_count = 0 [static]

Definition at line 73 of file http.c.

Referenced by cli_fax_show_sessions().

int session_limit = DEFAULT_SESSION_LIMIT [static]

Definition at line 72 of file http.c.

Referenced by report_session_limit().

struct ast_http_uri staticuri [static]

Definition at line 379 of file http.c.

Referenced by ast_http_init().

struct ast_http_uri statusuri [static]

Definition at line 370 of file http.c.

Referenced by ast_http_init().


Generated on Mon Oct 8 12:39:23 2012 for Asterisk - The Open Source Telephony Project by  doxygen 1.4.7