diff options
Diffstat (limited to 'protocols/twitter/twitter_http.c')
| -rw-r--r-- | protocols/twitter/twitter_http.c | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/protocols/twitter/twitter_http.c b/protocols/twitter/twitter_http.c new file mode 100644 index 00000000..4385475c --- /dev/null +++ b/protocols/twitter/twitter_http.c @@ -0,0 +1,235 @@ +/***************************************************************************\ +* * +* BitlBee - An IRC to IM gateway * +* Simple module to facilitate twitter functionality. * +* * +* Copyright 2009 Geert Mulders <g.c.w.m.mulders@gmail.com> * +* * +* This library is free software; you can redistribute it and/or * +* modify it under the terms of the GNU Lesser General Public * +* License as published by the Free Software Foundation, version * +* 2.1. * +* * +* This library 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 * +* Lesser General Public License for more details. * +* * +* You should have received a copy of the GNU Lesser General Public License * +* along with this library; if not, write to the Free Software Foundation, * +* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * +* * +****************************************************************************/ + +/***************************************************************************\ +* * +* Some funtions within this file have been copied from other files within * +* BitlBee. * +* * +****************************************************************************/ + +#include "twitter_http.h" +#include "twitter.h" +#include "bitlbee.h" +#include "url.h" +#include "misc.h" +#include "base64.h" +#include <ctype.h> +#include <errno.h> + + +char *twitter_urlencode(const char *instr); +char *twitter_url_append(char *url, char *key, char* value); +static int isurlchar(unsigned char c); + +/** + * Do a request. + * This is actually pretty generic function... Perhaps it should move to the lib/http_client.c + */ +void *twitter_http(char *url_string, http_input_function func, gpointer data, int is_post, char* user, char* pass, char** arguments, int arguments_len) +{ + url_t *url = g_new0( url_t, 1 ); + char *tmp; + char *request; + void *ret; + char *userpass = NULL; + char *userpass_base64; + char *url_arguments; + + // Fill the url structure. + if( !url_set( url, url_string ) ) + { + g_free( url ); + return NULL; + } + + if( url->proto != PROTO_HTTP && url->proto != PROTO_HTTPS ) + { + g_free( url ); + return NULL; + } + + // Concatenate user and pass + if (user && pass) { + userpass = g_strdup_printf("%s:%s", user, pass); + userpass_base64 = base64_encode((unsigned char*)userpass, strlen(userpass)); + } else { + userpass_base64 = NULL; + } + + url_arguments = g_malloc(1); + url_arguments[0] = '\0'; + + // Construct the url arguments. + if (arguments_len != 0) + { + int i; + for (i=0; i<arguments_len; i+=2) + { + tmp = twitter_url_append(url_arguments, arguments[i], arguments[i+1]); + g_free(url_arguments); + url_arguments = tmp; + } + } + + // Do GET stuff... + if (!is_post) + { + // Find the char-pointer of the end of the string. + tmp = url->file + strlen(url->file); + tmp[0] = '?'; + // append the url_arguments to the end of the url->file. + // TODO GM: Check the length? + g_stpcpy (tmp+1, url_arguments); + } + + + // Make the request. + request = g_strdup_printf( "%s %s HTTP/1.0\r\n" + "Host: %s\r\n" + "User-Agent: BitlBee " BITLBEE_VERSION " " ARCH "/" CPU "\r\n", + is_post ? "POST" : "GET", url->file, url->host ); + + // If a pass and user are given we append them to the request. + if (userpass_base64) + { + tmp = g_strdup_printf("%sAuthorization: Basic %s\r\n", request, userpass_base64); + g_free(request); + request = tmp; + } + + // Do POST stuff.. + if (is_post) + { + // Append the Content-Type and url-encoded arguments. + tmp = g_strdup_printf("%sContent-Type: application/x-www-form-urlencoded\r\nContent-Length: %i\r\n\r\n%s", + request, strlen(url_arguments), url_arguments); + g_free(request); + request = tmp; + } else { + // Append an extra \r\n to end the request... + tmp = g_strdup_printf("%s\r\n", request); + g_free(request); + request = tmp; + } + + ret = http_dorequest( url->host, url->port, url->proto == PROTO_HTTPS, request, func, data ); + + g_free( url ); + g_free( userpass ); + g_free( userpass_base64 ); + g_free( url_arguments ); + g_free( request ); + return ret; +} + +char *twitter_url_append(char *url, char *key, char* value) +{ + char *key_encoded = twitter_urlencode(key); + char *value_encoded = twitter_urlencode(value); + char *retval; + if (strlen(url) != 0) + retval = g_strdup_printf("%s&%s=%s", url, key_encoded, value_encoded); + else + retval = g_strdup_printf("%s=%s", key_encoded, value_encoded); + + g_free(key_encoded); + g_free(value_encoded); + + return retval; +} + +char *twitter_urlencode(const char *instr) +{ + int ipos=0, bpos=0; + char *str = NULL; + int len = strlen(instr); + + if(!(str = g_new(char, 3*len + 1) )) + return ""; + + while(instr[ipos]) { + while(isurlchar(instr[ipos])) + str[bpos++] = instr[ipos++]; + if(!instr[ipos]) + break; + + g_snprintf(&str[bpos], 4, "%%%.2x", instr[ipos]); + bpos+=3; + ipos++; + } + str[bpos]='\0'; + + /* free extra alloc'ed mem. */ + len = strlen(str); + str = g_renew(char, str, len+1); + + return (str); +} + + +char *twitter_urldecode(const char *instr) +{ + int ipos=0, bpos=0; + char *str = NULL; + char entity[3]={0,0,0}; + unsigned dec; + int len = strlen(instr); + + if(!(str = g_new(char, len+1) )) + return ""; + + while(instr[ipos]) { + while(instr[ipos] && instr[ipos]!='%') + if(instr[ipos]=='+') { + str[bpos++]=' '; + ipos++; + } else + str[bpos++] = instr[ipos++]; + if(!instr[ipos]) + break; + + if(instr[ipos+1] && instr[ipos+2]) { + ipos++; + entity[0]=instr[ipos++]; + entity[1]=instr[ipos++]; + sscanf(entity, "%2x", &dec); + str[bpos++] = (char)dec; + } else { + str[bpos++] = instr[ipos++]; + } + } + str[bpos]='\0'; + + /* free extra alloc'ed mem. */ + len = strlen(str); + str = g_renew(char, str, len+1); + + return (str); +} + +static int isurlchar(unsigned char c) +{ + return (isalnum(c) || '-' == c || '_' == c); +} + |