diff options
| -rw-r--r-- | docs/examples/Makefile.inc | 2 | ||||
| -rw-r--r-- | docs/examples/postinmemory.c | 111 |
2 files changed, 112 insertions, 1 deletions
diff --git a/docs/examples/Makefile.inc b/docs/examples/Makefile.inc index 6752db43d..5d3bcfc1a 100644 --- a/docs/examples/Makefile.inc +++ b/docs/examples/Makefile.inc @@ -5,7 +5,7 @@ check_PROGRAMS = 10-at-a-time anyauthput cookie_interface debug fileupload \ persistant post-callback postit2 sepheaders simple simplepost simplessl \ sendrecv httpcustomheader certinfo chkspeed ftpgetinfo ftp-wildcard \ smtp-multi simplesmtp smtp-tls rtsp externalsocket resolve \ - progressfunc pop3s pop3slist imap url2file sftpget ftpsget + progressfunc pop3s pop3slist imap url2file sftpget ftpsget postinmemory # These examples require external dependencies that may not be commonly # available on POSIX systems, so don't bother attempting to compile them here. diff --git a/docs/examples/postinmemory.c b/docs/examples/postinmemory.c new file mode 100644 index 000000000..cd2bd13fb --- /dev/null +++ b/docs/examples/postinmemory.c @@ -0,0 +1,111 @@ +/*************************************************************************** + * _ _ ____ _ + * Project ___| | | | _ \| | + * / __| | | | |_) | | + * | (__| |_| | _ <| |___ + * \___|\___/|_| \_\_____| + * + * Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al. + * + * This software is licensed as described in the file COPYING, which + * you should have received as part of this distribution. The terms + * are also available at http://curl.haxx.se/docs/copyright.html. + * + * You may opt to use, copy, modify, merge, publish, distribute and/or sell + * copies of the Software, and permit persons to whom the Software is + * furnished to do so, under the terms of the COPYING file. + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY + * KIND, either express or implied. + * + ***************************************************************************/ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <curl/curl.h> + +struct MemoryStruct { + char *memory; + size_t size; +}; + +static size_t +WriteMemoryCallback(void *contents, size_t size, size_t nmemb, void *userp) +{ + size_t realsize = size * nmemb; + struct MemoryStruct *mem = (struct MemoryStruct *)userp; + + mem->memory = realloc(mem->memory, mem->size + realsize + 1); + if(mem->memory == NULL) { + /* out of memory! */ + printf("not enough memory (realloc returned NULL)\n"); + return 0; + } + + memcpy(&(mem->memory[mem->size]), contents, realsize); + mem->size += realsize; + mem->memory[mem->size] = 0; + + return realsize; +} + +int main(void) +{ + CURL *curl; + CURLcode res; + struct MemoryStruct chunk; + static const char *postthis="Field=1&Field=2&Field=3"; + + chunk.memory = malloc(1); /* will be grown as needed by realloc above */ + chunk.size = 0; /* no data at this point */ + + curl_global_init(CURL_GLOBAL_ALL); + curl = curl_easy_init(); + if(curl) { + + curl_easy_setopt(curl, CURLOPT_URL, "http://www.example.org/"); + + /* send all data to this function */ + curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteMemoryCallback); + + /* we pass our 'chunk' struct to the callback function */ + curl_easy_setopt(curl, CURLOPT_WRITEDATA, (void *)&chunk); + + /* some servers don't like requests that are made without a user-agent + field, so we provide one */ + curl_easy_setopt(curl, CURLOPT_USERAGENT, "libcurl-agent/1.0"); + + curl_easy_setopt(curl, CURLOPT_POSTFIELDS, postthis); + + /* if we don't provide POSTFIELDSIZE, libcurl will strlen() by + itself */ + curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, (long)strlen(postthis)); + + /* Perform the request, res will get the return code */ + res = curl_easy_perform(curl); + /* Check for errors */ + if(res != CURLE_OK) { + fprintf(stderr, "curl_easy_perform() failed: %s\n", + curl_easy_strerror(res)); + } + else { + /* + * Now, our chunk.memory points to a memory block that is chunk.size + * bytes big and contains the remote file. + * + * Do something nice with it! + */ + printf("%s\n",chunk.memory); + } + + /* always cleanup */ + curl_easy_cleanup(curl); + + if(chunk.memory) + free(chunk.memory); + + /* we're done with libcurl, so clean it up */ + curl_global_cleanup(); + } + return 0; +} |