Tristan Matthews | 0a329cc | 2013-07-17 13:20:14 -0400 | [diff] [blame] | 1 | /* $Id$ */ |
| 2 | /* |
| 3 | * Copyright (C) 2008-2011 Teluu Inc. (http://www.teluu.com) |
| 4 | * Copyright (C) 2003-2008 Benny Prijono <benny@prijono.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | #include <pjsip-simple/evsub_msg.h> |
| 21 | #include <pjsip/print_util.h> |
| 22 | #include <pjsip/sip_parser.h> |
| 23 | #include <pjlib-util/string.h> |
| 24 | #include <pj/pool.h> |
| 25 | #include <pj/string.h> |
| 26 | #include <pj/except.h> |
| 27 | |
| 28 | /* |
| 29 | * Event header. |
| 30 | */ |
| 31 | static int pjsip_event_hdr_print( pjsip_event_hdr *hdr, |
| 32 | char *buf, pj_size_t size); |
| 33 | static pjsip_event_hdr* pjsip_event_hdr_clone( pj_pool_t *pool, |
| 34 | const pjsip_event_hdr *hdr); |
| 35 | static pjsip_event_hdr* pjsip_event_hdr_shallow_clone( pj_pool_t *pool, |
| 36 | const pjsip_event_hdr*); |
| 37 | |
| 38 | static pjsip_hdr_vptr event_hdr_vptr = |
| 39 | { |
| 40 | (pjsip_hdr_clone_fptr) &pjsip_event_hdr_clone, |
| 41 | (pjsip_hdr_clone_fptr) &pjsip_event_hdr_shallow_clone, |
| 42 | (pjsip_hdr_print_fptr) &pjsip_event_hdr_print, |
| 43 | }; |
| 44 | |
| 45 | |
| 46 | PJ_DEF(pjsip_event_hdr*) pjsip_event_hdr_create(pj_pool_t *pool) |
| 47 | { |
| 48 | pjsip_event_hdr *hdr = PJ_POOL_ZALLOC_T(pool, pjsip_event_hdr); |
| 49 | hdr->type = PJSIP_H_OTHER; |
| 50 | hdr->name.ptr = "Event"; |
| 51 | hdr->name.slen = 5; |
| 52 | hdr->sname.ptr = "o"; |
| 53 | hdr->sname.slen = 1; |
| 54 | hdr->vptr = &event_hdr_vptr; |
| 55 | pj_list_init(hdr); |
| 56 | pj_list_init(&hdr->other_param); |
| 57 | return hdr; |
| 58 | } |
| 59 | |
| 60 | static int pjsip_event_hdr_print( pjsip_event_hdr *hdr, |
| 61 | char *buf, pj_size_t size) |
| 62 | { |
| 63 | char *p = buf; |
| 64 | char *endbuf = buf+size; |
| 65 | pj_ssize_t printed; |
| 66 | const pjsip_parser_const_t *pc = pjsip_parser_const(); |
| 67 | |
| 68 | copy_advance(p, hdr->name); |
| 69 | *p++ = ':'; |
| 70 | *p++ = ' '; |
| 71 | |
| 72 | copy_advance(p, hdr->event_type); |
| 73 | copy_advance_pair(p, ";id=", 4, hdr->id_param); |
| 74 | |
| 75 | printed = pjsip_param_print_on(&hdr->other_param, p, endbuf-p, |
| 76 | &pc->pjsip_TOKEN_SPEC, |
| 77 | &pc->pjsip_TOKEN_SPEC, ';'); |
| 78 | if (printed < 0) |
| 79 | return (int)printed; |
| 80 | |
| 81 | p += printed; |
| 82 | return (int)(p - buf); |
| 83 | } |
| 84 | |
| 85 | static pjsip_event_hdr* pjsip_event_hdr_clone( pj_pool_t *pool, |
| 86 | const pjsip_event_hdr *rhs) |
| 87 | { |
| 88 | pjsip_event_hdr *hdr = pjsip_event_hdr_create(pool); |
| 89 | pj_strdup(pool, &hdr->event_type, &rhs->event_type); |
| 90 | pj_strdup(pool, &hdr->id_param, &rhs->id_param); |
| 91 | pjsip_param_clone(pool, &hdr->other_param, &rhs->other_param); |
| 92 | return hdr; |
| 93 | } |
| 94 | |
| 95 | static pjsip_event_hdr* |
| 96 | pjsip_event_hdr_shallow_clone( pj_pool_t *pool, |
| 97 | const pjsip_event_hdr *rhs ) |
| 98 | { |
| 99 | pjsip_event_hdr *hdr = PJ_POOL_ALLOC_T(pool, pjsip_event_hdr); |
| 100 | pj_memcpy(hdr, rhs, sizeof(*hdr)); |
| 101 | pjsip_param_shallow_clone(pool, &hdr->other_param, &rhs->other_param); |
| 102 | return hdr; |
| 103 | } |
| 104 | |
| 105 | |
| 106 | /* |
| 107 | * Allow-Events header. |
| 108 | */ |
| 109 | PJ_DEF(pjsip_allow_events_hdr*) pjsip_allow_events_hdr_create(pj_pool_t *pool) |
| 110 | { |
| 111 | const pj_str_t STR_ALLOW_EVENTS = { "Allow-Events", 12}; |
| 112 | pjsip_allow_events_hdr *hdr; |
| 113 | |
| 114 | hdr = pjsip_generic_array_hdr_create(pool, &STR_ALLOW_EVENTS); |
| 115 | |
| 116 | if (hdr) { |
| 117 | hdr->sname.ptr = "u"; |
| 118 | hdr->sname.slen = 1; |
| 119 | } |
| 120 | |
| 121 | return hdr; |
| 122 | } |
| 123 | |
| 124 | |
| 125 | /* |
| 126 | * Subscription-State header. |
| 127 | */ |
| 128 | static int pjsip_sub_state_hdr_print(pjsip_sub_state_hdr *hdr, |
| 129 | char *buf, pj_size_t size); |
| 130 | static pjsip_sub_state_hdr* |
| 131 | pjsip_sub_state_hdr_clone(pj_pool_t *pool, |
| 132 | const pjsip_sub_state_hdr *hdr); |
| 133 | static pjsip_sub_state_hdr* |
| 134 | pjsip_sub_state_hdr_shallow_clone(pj_pool_t *pool, |
| 135 | const pjsip_sub_state_hdr*); |
| 136 | |
| 137 | static pjsip_hdr_vptr sub_state_hdr_vptr = |
| 138 | { |
| 139 | (pjsip_hdr_clone_fptr) &pjsip_sub_state_hdr_clone, |
| 140 | (pjsip_hdr_clone_fptr) &pjsip_sub_state_hdr_shallow_clone, |
| 141 | (pjsip_hdr_print_fptr) &pjsip_sub_state_hdr_print, |
| 142 | }; |
| 143 | |
| 144 | |
| 145 | PJ_DEF(pjsip_sub_state_hdr*) pjsip_sub_state_hdr_create(pj_pool_t *pool) |
| 146 | { |
| 147 | pj_str_t sub_state = { "Subscription-State", 18 }; |
| 148 | pjsip_sub_state_hdr *hdr = PJ_POOL_ZALLOC_T(pool, pjsip_sub_state_hdr); |
| 149 | hdr->type = PJSIP_H_OTHER; |
| 150 | hdr->name = hdr->sname = sub_state; |
| 151 | hdr->vptr = &sub_state_hdr_vptr; |
| 152 | hdr->expires_param = -1; |
| 153 | hdr->retry_after = -1; |
| 154 | pj_list_init(hdr); |
| 155 | pj_list_init(&hdr->other_param); |
| 156 | return hdr; |
| 157 | } |
| 158 | |
| 159 | static int pjsip_sub_state_hdr_print(pjsip_sub_state_hdr *hdr, |
| 160 | char *buf, pj_size_t size) |
| 161 | { |
| 162 | char *p = buf; |
| 163 | char *endbuf = buf+size; |
| 164 | pj_ssize_t printed; |
| 165 | const pjsip_parser_const_t *pc = pjsip_parser_const(); |
| 166 | |
| 167 | copy_advance(p, hdr->name); |
| 168 | *p++ = ':'; |
| 169 | *p++ = ' '; |
| 170 | |
| 171 | copy_advance_escape(p, hdr->sub_state, pc->pjsip_TOKEN_SPEC); |
| 172 | copy_advance_pair_escape(p, ";reason=", 8, hdr->reason_param, |
| 173 | pc->pjsip_TOKEN_SPEC); |
| 174 | if (hdr->expires_param >= 0) { |
| 175 | pj_memcpy(p, ";expires=", 9); |
| 176 | p += 9; |
| 177 | printed = pj_utoa(hdr->expires_param, p); |
| 178 | p += printed; |
| 179 | } |
| 180 | if (hdr->retry_after >= 0) { |
| 181 | pj_memcpy(p, ";retry-after=", 13); |
| 182 | p += 9; |
| 183 | printed = pj_utoa(hdr->retry_after, p); |
| 184 | p += printed; |
| 185 | } |
| 186 | |
| 187 | printed = pjsip_param_print_on( &hdr->other_param, p, endbuf-p, |
| 188 | &pc->pjsip_TOKEN_SPEC, |
| 189 | &pc->pjsip_TOKEN_SPEC, |
| 190 | ';'); |
| 191 | if (printed < 0) |
| 192 | return (int)printed; |
| 193 | |
| 194 | p += printed; |
| 195 | |
| 196 | return (int)(p - buf); |
| 197 | } |
| 198 | |
| 199 | static pjsip_sub_state_hdr* |
| 200 | pjsip_sub_state_hdr_clone(pj_pool_t *pool, |
| 201 | const pjsip_sub_state_hdr *rhs) |
| 202 | { |
| 203 | pjsip_sub_state_hdr *hdr = pjsip_sub_state_hdr_create(pool); |
| 204 | pj_strdup(pool, &hdr->sub_state, &rhs->sub_state); |
| 205 | pj_strdup(pool, &hdr->reason_param, &rhs->reason_param); |
| 206 | hdr->retry_after = rhs->retry_after; |
| 207 | hdr->expires_param = rhs->expires_param; |
| 208 | pjsip_param_clone(pool, &hdr->other_param, &rhs->other_param); |
| 209 | return hdr; |
| 210 | } |
| 211 | |
| 212 | static pjsip_sub_state_hdr* |
| 213 | pjsip_sub_state_hdr_shallow_clone(pj_pool_t *pool, |
| 214 | const pjsip_sub_state_hdr *rhs) |
| 215 | { |
| 216 | pjsip_sub_state_hdr *hdr = PJ_POOL_ALLOC_T(pool, pjsip_sub_state_hdr); |
| 217 | pj_memcpy(hdr, rhs, sizeof(*hdr)); |
| 218 | pjsip_param_shallow_clone(pool, &hdr->other_param, &rhs->other_param); |
| 219 | return hdr; |
| 220 | } |
| 221 | |
| 222 | |
| 223 | /* |
| 224 | * Parse Event header. |
| 225 | */ |
| 226 | static pjsip_hdr *parse_hdr_event(pjsip_parse_ctx *ctx) |
| 227 | { |
| 228 | pjsip_event_hdr *hdr = pjsip_event_hdr_create(ctx->pool); |
| 229 | const pj_str_t id_param = { "id", 2 }; |
| 230 | const pjsip_parser_const_t *pc = pjsip_parser_const(); |
| 231 | |
| 232 | pj_scan_get(ctx->scanner, &pc->pjsip_TOKEN_SPEC, &hdr->event_type); |
| 233 | |
| 234 | while (*ctx->scanner->curptr == ';') { |
| 235 | pj_str_t pname, pvalue; |
| 236 | |
| 237 | pj_scan_get_char(ctx->scanner); |
| 238 | pjsip_parse_param_imp(ctx->scanner, ctx->pool, &pname, &pvalue, 0); |
| 239 | |
| 240 | if (pj_stricmp(&pname, &id_param)==0) { |
| 241 | hdr->id_param = pvalue; |
| 242 | } else { |
| 243 | pjsip_param *param = PJ_POOL_ALLOC_T(ctx->pool, pjsip_param); |
| 244 | param->name = pname; |
| 245 | param->value = pvalue; |
| 246 | pj_list_push_back(&hdr->other_param, param); |
| 247 | } |
| 248 | } |
| 249 | pjsip_parse_end_hdr_imp( ctx->scanner ); |
| 250 | return (pjsip_hdr*)hdr; |
| 251 | } |
| 252 | |
| 253 | /* |
| 254 | * Parse Subscription-State header. |
| 255 | */ |
| 256 | static pjsip_hdr* parse_hdr_sub_state( pjsip_parse_ctx *ctx ) |
| 257 | { |
| 258 | pjsip_sub_state_hdr *hdr = pjsip_sub_state_hdr_create(ctx->pool); |
| 259 | const pj_str_t reason = { "reason", 6 }, |
| 260 | expires = { "expires", 7 }, |
| 261 | retry_after = { "retry-after", 11 }; |
| 262 | const pjsip_parser_const_t *pc = pjsip_parser_const(); |
| 263 | |
| 264 | pj_scan_get(ctx->scanner, &pc->pjsip_TOKEN_SPEC, &hdr->sub_state); |
| 265 | |
| 266 | while (*ctx->scanner->curptr == ';') { |
| 267 | pj_str_t pname, pvalue; |
| 268 | |
| 269 | pj_scan_get_char(ctx->scanner); |
| 270 | pjsip_parse_param_imp(ctx->scanner, ctx->pool, &pname, &pvalue, 0); |
| 271 | |
| 272 | if (pj_stricmp(&pname, &reason) == 0) { |
| 273 | hdr->reason_param = pvalue; |
| 274 | |
| 275 | } else if (pj_stricmp(&pname, &expires) == 0) { |
| 276 | hdr->expires_param = pj_strtoul(&pvalue); |
| 277 | |
| 278 | } else if (pj_stricmp(&pname, &retry_after) == 0) { |
| 279 | hdr->retry_after = pj_strtoul(&pvalue); |
| 280 | |
| 281 | } else { |
| 282 | pjsip_param *param = PJ_POOL_ALLOC_T(ctx->pool, pjsip_param); |
| 283 | param->name = pname; |
| 284 | param->value = pvalue; |
| 285 | pj_list_push_back(&hdr->other_param, param); |
| 286 | } |
| 287 | } |
| 288 | |
| 289 | pjsip_parse_end_hdr_imp( ctx->scanner ); |
| 290 | return (pjsip_hdr*)hdr; |
| 291 | } |
| 292 | |
| 293 | /* |
| 294 | * Register header parsers. |
| 295 | */ |
| 296 | PJ_DEF(void) pjsip_evsub_init_parser(void) |
| 297 | { |
| 298 | pjsip_register_hdr_parser( "Event", "o", |
| 299 | &parse_hdr_event); |
| 300 | |
| 301 | pjsip_register_hdr_parser( "Subscription-State", NULL, |
| 302 | &parse_hdr_sub_state); |
| 303 | } |
| 304 | |