1 | /********************************************************************\ |
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2 | * BitlBee -- An IRC to other IM-networks gateway * |
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3 | * * |
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4 | * Copyright 2002-2012 Wilmer van der Gaast and others * |
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5 | \********************************************************************/ |
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6 | |
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7 | /* HTTP(S) module */ |
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8 | |
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9 | /* |
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10 | This program is free software; you can redistribute it and/or modify |
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11 | it under the terms of the GNU General Public License as published by |
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12 | the Free Software Foundation; either version 2 of the License, or |
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13 | (at your option) any later version. |
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14 | |
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15 | This program is distributed in the hope that it will be useful, |
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16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 | GNU General Public License for more details. |
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19 | |
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20 | You should have received a copy of the GNU General Public License with |
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21 | the Debian GNU/Linux distribution in /usr/share/common-licenses/GPL; |
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22 | if not, write to the Free Software Foundation, Inc., 59 Temple Place, |
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23 | Suite 330, Boston, MA 02111-1307 USA |
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24 | */ |
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25 | |
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26 | /* http_client allows you to talk (asynchronously, again) to HTTP servers. |
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27 | In the "background" it will send the whole query and wait for a complete |
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28 | response to come back. Initially written for MS Passport authentication, |
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29 | but used for many other things now like OAuth and Twitter. |
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30 | |
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31 | It's very useful for doing quick requests without blocking the whole |
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32 | program. Unfortunately it doesn't support fancy stuff like HTTP keep- |
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33 | alives. */ |
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34 | |
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35 | #include <glib.h> |
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36 | #include "ssl_client.h" |
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37 | |
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38 | struct http_request; |
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39 | |
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40 | typedef enum http_client_flags |
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41 | { |
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42 | HTTPC_STREAMING = 1, |
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43 | HTTPC_EOF = 2, |
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44 | |
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45 | /* Let's reserve 0x1000000+ for lib users. */ |
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46 | } http_client_flags_t; |
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47 | |
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48 | /* Your callback function should look like this: */ |
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49 | typedef void (*http_input_function)( struct http_request * ); |
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50 | |
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51 | /* This structure will be filled in by the http_dorequest* functions, and |
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52 | it will be passed to the callback function. Use the data field to add |
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53 | your own data. */ |
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54 | struct http_request |
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55 | { |
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56 | char *request; /* The request to send to the server. */ |
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57 | int request_length; /* Its size. */ |
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58 | short status_code; /* The numeric HTTP status code. (Or -1 |
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59 | if something really went wrong) */ |
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60 | char *status_string; /* The error text. */ |
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61 | char *reply_headers; |
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62 | char *reply_body; |
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63 | int body_size; /* The number of bytes in reply_body. */ |
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64 | short redir_ttl; /* You can set it to 0 if you don't want |
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65 | http_client to follow them. */ |
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66 | |
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67 | http_client_flags_t flags; |
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68 | |
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69 | http_input_function func; |
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70 | gpointer data; |
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71 | |
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72 | /* Please don't touch the things down here, you shouldn't need them. */ |
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73 | void *ssl; |
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74 | int fd; |
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75 | |
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76 | int inpa; |
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77 | int bytes_written; |
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78 | int bytes_read; |
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79 | |
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80 | /* Used in streaming mode. Caller should read from reply_body. */ |
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81 | char *sbuf; |
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82 | size_t sblen; |
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83 | }; |
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84 | |
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85 | /* The _url variant is probably more useful than the raw version. The raw |
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86 | version is probably only useful if you want to do POST requests or if |
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87 | you want to add some extra headers. As you can see, HTTPS connections |
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88 | are also supported (using ssl_client). */ |
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89 | struct http_request *http_dorequest( char *host, int port, int ssl, char *request, http_input_function func, gpointer data ); |
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90 | struct http_request *http_dorequest_url( char *url_string, http_input_function func, gpointer data ); |
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91 | |
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92 | /* For streaming connections only; flushes len bytes at the start of the buffer. */ |
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93 | void http_flush_bytes( struct http_request *req, size_t len ); |
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94 | void http_close( struct http_request *req ); |
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