2 * webcit.h - "header of headers"
4 * Copyright (c) 1996-2017 by the citadel.org team
6 * This program is open source software. You can redistribute it and/or
7 * modify it under the terms of the GNU General Public License, version 3.
17 #include <sys/types.h>
18 #include <sys/socket.h>
19 #include <netinet/in.h>
20 #include <arpa/inet.h>
34 #include <libcitadel.h>
35 #define OPENSSL_NO_KRB5 // Work around RedHat's b0rken OpenSSL includes
36 #include <openssl/ssl.h>
37 #include <openssl/err.h>
38 #include <openssl/rand.h>
40 #define _(x) x // temporary hack until we add i18n back in
41 //#define DEBUG_HTTP // uncomment to debug HTTP headers
43 /* XML_StopParser is present in expat 2.x */
44 #if XML_MAJOR_VERSION > 1
45 #define HAVE_XML_STOPPARSER
48 struct client_handle { // this gets passed up the stack from the webserver to the application code
53 struct http_header { // request and response headers in struct http_transaction use this format
54 struct http_header *next;
59 struct http_transaction { // The lifetime of an HTTP request goes through this data structure.
60 char *method; // The top half is built up by the web server and sent up to the
61 char *uri; // application stack. The second half is built up by the application
62 char *http_version; // stack and sent back down to the web server, which transmits it to
63 char *site_prefix; // the client.
64 struct http_header *request_headers;
66 long request_body_length;
68 char *response_string;
69 struct http_header *response_headers;
71 long response_body_length;
74 #define AUTH_MAX 256 // Maximum length of an HTTP AUTH header or equivalent cookie data
76 struct ctdlsession *next;
77 int is_bound; // Nonzero if this record is currently bound to a running thread
78 int sock; // Socket connection to Citadel server
79 char auth[AUTH_MAX]; // Auth string (empty if not logged in)
80 char whoami[64]; // Display name of currently logged in user (empty if not logged in)
81 char room[128]; // What room we are currently in
82 int room_current_view;
83 int room_default_view;
86 time_t last_access; // Timestamp of last request that used this session
87 time_t num_requests_handled;
90 extern char *ssl_cipher_list;
91 extern int is_https; // nonzero if we are an HTTPS server today
92 extern char *ctdlhost;
93 extern char *ctdlport;
95 void starttls(struct client_handle *);
96 void endtls(struct client_handle *);
97 int client_write_ssl(struct client_handle *ch, char *buf, int nbytes);
98 int client_read_ssl(struct client_handle *ch, char *buf, int nbytes);
106 #define TRACE syslog(LOG_DEBUG, "\033[3%dmCHECKPOINT: %s:%d\033[0m", ((__LINE__%6)+1), __FILE__, __LINE__)
107 #define SLEEPING 180 // TCP connection timeout
108 #define MAX_WORKER_THREADS 32 // Maximum number of worker threads permitted to exist
109 #define CTDL_CRYPTO_DIR "keys"
110 #define CTDL_KEY_PATH CTDL_CRYPTO_DIR "/webcit.key"
111 #define CTDL_CSR_PATH CTDL_CRYPTO_DIR "/webcit.csr"
112 #define CTDL_CER_PATH CTDL_CRYPTO_DIR "/webcit.cer"
113 #define SIGN_DAYS 3650 // how long our certificate should live
114 #define DEFAULT_SSL_CIPHER_LIST "DEFAULT" // See http://openssl.org/docs/apps/ciphers.html
115 #define WEBSERVER_PORT 80
116 #define WEBSERVER_INTERFACE "*"
117 #define CTDLHOST "uncensored.citadel.org"
118 #define CTDLPORT "504"
119 #define DEVELOPER_ID 0
121 #define TARGET "webcit01" /* Window target for inline URL's */
123 void worker_entry(int *pointer_to_master_socket);
124 void perform_one_http_transaction(struct client_handle *ch);
125 void add_response_header(struct http_transaction *h, char *key, char *val);
126 void perform_request(struct http_transaction *);
127 void do_404(struct http_transaction *);
128 void output_static(struct http_transaction *);
129 int uds_connectsock(char *sockpath);
130 int tcp_connectsock(char *host, char *service);
131 void ctdl_a(struct http_transaction *, struct ctdlsession *);
132 void ctdl_r(struct http_transaction *, struct ctdlsession *);
133 struct ctdlsession *connect_to_citadel(struct http_transaction *);
134 void disconnect_from_citadel(struct ctdlsession *);
135 char *header_val(struct http_transaction *h, char *requested_header);
136 int unescape_input(char *);
137 void http_redirect(struct http_transaction *h, char *to_where);
138 char *http_datestring(time_t xtime);
139 long *get_msglist(struct ctdlsession *c, char *which_msgs);
140 void caldav_report(struct http_transaction *h, struct ctdlsession *c);
141 long locate_message_by_uid(struct ctdlsession *c, char *uid);
142 void ctdl_delete_msgs(struct ctdlsession *c, long *msgnums, int num_msgs);
143 void dav_delete_message(struct http_transaction *h, struct ctdlsession *c, long msgnum);
144 void dav_get_message(struct http_transaction *h, struct ctdlsession *c, long msgnum);
145 void dav_put_message(struct http_transaction *h, struct ctdlsession *c, char *euid, long old_msgnum);
146 ssize_t ctdl_write(struct ctdlsession *ctdl, const void *buf, size_t count);
147 int login_to_citadel(struct ctdlsession *c, char *auth, char *resultbuf);
148 void threaded_view(struct http_transaction *h, struct ctdlsession *c, char *which);
149 StrBuf *ctdl_readtextmsg(struct ctdlsession *ctdl);
150 StrBuf *html2html(const char *supplied_charset, int treat_as_wiki, char *roomname, long msgnum, StrBuf *Source);
151 void download_mime_component(struct http_transaction *h, struct ctdlsession *c, long msgnum, char *partnum);
152 StrBuf *text2html(const char *supplied_charset, int treat_as_wiki, char *roomname, long msgnum, StrBuf *Source);
153 StrBuf *variformat2html(StrBuf *Source);
155 void *mallok(size_t size);
156 void phree(void *ptr);
157 void *reallok(void *ptr, size_t size);