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/*
Copyright (C) 2010 ABRT team
Copyright (C) 2010 RedHat Inc
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "abrtlib.h"
#include "abrt_curl.h"
#include "CommLayerInner.h"
using namespace std;
/*
* Utility function
*/
CURL* xcurl_easy_init()
{
CURL* curl = curl_easy_init();
if (!curl)
{
error_msg_and_die("Can't create curl handle");
}
return curl;
}
/*
* curl_post: perform HTTP POST transaction
*/
static char*
check_curl_error(CURLcode err, const char* msg)
{
if (err)
return xasprintf("%s: %s", msg, curl_easy_strerror(err));
return NULL;
}
static void
die_if_curl_error(CURLcode err)
{
char *msg = check_curl_error(err, "curl");
if (msg)
error_msg_and_die("%s", msg);
}
/* "save headers" callback */
static size_t
save_headers(void *buffer_pv, size_t count, size_t nmemb, void *ptr)
{
curl_post_state_t* state = (curl_post_state_t*)ptr;
size_t size = count * nmemb;
unsigned cnt = state->header_cnt;
state->headers = (char**)xrealloc(state->headers, (cnt+2) * sizeof(state->headers[0]));
char *h = xstrndup((char*)buffer_pv, size);
strchrnul(h, '\r')[0] = '\0';
strchrnul(h, '\n')[0] = '\0';
VERB3 log("save_headers: header %d: '%s'", cnt, h);
state->headers[cnt] = h;
state->header_cnt = ++cnt;
state->headers[cnt] = NULL;
return size;
}
int
curl_post(curl_post_state_t* state, const char* url, const char* data)
{
CURLcode curl_err;
long response_code;
struct curl_slist *httpheader_list = NULL;
FILE* body_stream = NULL;
curl_post_state_t localstate;
VERB3 log("curl_post('%s','%s')", url, data);
if (!state)
{
memset(&localstate, 0, sizeof(localstate));
state = &localstate;
}
state->http_resp_code = response_code = -1;
CURL *handle = xcurl_easy_init();
curl_err = curl_easy_setopt(handle, CURLOPT_VERBOSE, 0);
die_if_curl_error(curl_err);
curl_err = curl_easy_setopt(handle, CURLOPT_NOPROGRESS, 1);
die_if_curl_error(curl_err);
curl_err = curl_easy_setopt(handle, CURLOPT_URL, url);
die_if_curl_error(curl_err);
curl_err = curl_easy_setopt(handle, CURLOPT_POST, 1);
die_if_curl_error(curl_err);
curl_err = curl_easy_setopt(handle, CURLOPT_POSTFIELDS, data);
die_if_curl_error(curl_err);
httpheader_list = curl_slist_append(httpheader_list, "Content-Type: application/xml");
curl_err = curl_easy_setopt(handle, CURLOPT_HTTPHEADER, httpheader_list);
die_if_curl_error(curl_err);
if (state->flags & ABRT_CURL_POST_WANT_HEADERS)
{
curl_err = curl_easy_setopt(handle, CURLOPT_HEADERFUNCTION, save_headers);
die_if_curl_error(curl_err);
curl_err = curl_easy_setopt(handle, CURLOPT_WRITEHEADER, state);
die_if_curl_error(curl_err);
}
if (state->flags & ABRT_CURL_POST_WANT_BODY)
{
body_stream = open_memstream(&state->body, &state->body_size);
if (!body_stream)
error_msg_and_die("out of memory");
curl_err = curl_easy_setopt(handle, CURLOPT_WRITEDATA, body_stream);
die_if_curl_error(curl_err);
}
/* This is the place where everything happens. Here errors
* are not limited to "out of memory", can't just die.
*/
curl_err = curl_easy_perform(handle);
if (curl_err)
{
if (state->flags & ABRT_CURL_POST_WANT_ERROR_MSG)
state->curl_error_msg = check_curl_error(curl_err, "curl_easy_perform");
goto ret;
}
curl_err = curl_easy_getinfo(handle, CURLINFO_RESPONSE_CODE, &response_code);
die_if_curl_error(curl_err);
state->http_resp_code = response_code;
VERB3 log("after curl_easy_perform: http code %ld body:'%s'", response_code, state->body);
ret:
curl_easy_cleanup(handle);
curl_slist_free_all(httpheader_list);
if (body_stream)
fclose(body_stream);
return response_code;
}
curl_post_state_t *new_curl_post_state(int flags)
{
curl_post_state_t *state = (curl_post_state_t *)xzalloc(sizeof(*state));
state->flags = flags;
return state;
}
void free_curl_post_state(curl_post_state_t *state)
{
char **headers = state->headers;
if (headers)
{
while (*headers)
free(*headers++);
free(state->headers);
}
free(state->curl_error_msg);
free(state->body);
free(state);
}
char *find_header_in_curl_post_state(curl_post_state_t *state, const char *str)
{
char **headers = state->headers;
if (headers)
{
unsigned len = strlen(str);
while (*headers)
{
if (strncmp(*headers, str, len) == 0)
return skip_whitespace(*headers + len);
headers++;
}
}
return NULL;
}
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