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| 1 | /*
|
|---|---|
| 2 | * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client |
| 3 | * Copyright (C) 1999-2005 Hiroyuki Yamamoto |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU General Public License as published by |
| 7 | * the Free Software Foundation; either version 2 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License |
| 16 | * along with this program; if not, write to the Free Software |
| 17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 18 | */ |
| 19 | |
| 20 | #ifdef HAVE_CONFIG_H
|
| 21 | # include "config.h" |
| 22 | #endif
|
| 23 | |
| 24 | #include "defs.h" |
| 25 | |
| 26 | #include <glib.h> |
| 27 | #include <glib/gi18n.h> |
| 28 | #include <stdio.h> |
| 29 | #include <string.h> |
| 30 | #include <locale.h> |
| 31 | #include <ctype.h> |
| 32 | |
| 33 | #include "procmime.h" |
| 34 | #include "procheader.h" |
| 35 | #include "base64.h" |
| 36 | #include "quoted-printable.h" |
| 37 | #include "uuencode.h" |
| 38 | #include "html.h" |
| 39 | #include "codeconv.h" |
| 40 | #include "utils.h" |
| 41 | #include "prefs_common.h" |
| 42 | |
| 43 | #if USE_GPGME
|
| 44 | # include "rfc2015.h" |
| 45 | #endif
|
| 46 | |
| 47 | static GHashTable *procmime_get_mime_type_table (void); |
| 48 | static GList *procmime_get_mime_type_list (const gchar *file); |
| 49 | |
| 50 | |
| 51 | MimeInfo *procmime_mimeinfo_new(void)
|
| 52 | {
|
| 53 | MimeInfo *mimeinfo; |
| 54 | |
| 55 | mimeinfo = g_new0(MimeInfo, 1);
|
| 56 | mimeinfo->mime_type = MIME_UNKNOWN; |
| 57 | mimeinfo->encoding_type = ENC_UNKNOWN; |
| 58 | |
| 59 | return mimeinfo;
|
| 60 | } |
| 61 | |
| 62 | void procmime_mimeinfo_free_all(MimeInfo *mimeinfo)
|
| 63 | {
|
| 64 | while (mimeinfo != NULL) { |
| 65 | MimeInfo *next; |
| 66 | |
| 67 | g_free(mimeinfo->encoding); |
| 68 | g_free(mimeinfo->content_type); |
| 69 | g_free(mimeinfo->charset); |
| 70 | g_free(mimeinfo->name); |
| 71 | g_free(mimeinfo->boundary); |
| 72 | g_free(mimeinfo->content_disposition); |
| 73 | g_free(mimeinfo->filename); |
| 74 | #if USE_GPGME
|
| 75 | g_free(mimeinfo->plaintextfile); |
| 76 | g_free(mimeinfo->sigstatus); |
| 77 | g_free(mimeinfo->sigstatus_full); |
| 78 | #endif
|
| 79 | |
| 80 | procmime_mimeinfo_free_all(mimeinfo->sub); |
| 81 | procmime_mimeinfo_free_all(mimeinfo->children); |
| 82 | #if USE_GPGME
|
| 83 | procmime_mimeinfo_free_all(mimeinfo->plaintext); |
| 84 | #endif
|
| 85 | |
| 86 | next = mimeinfo->next; |
| 87 | g_free(mimeinfo); |
| 88 | mimeinfo = next; |
| 89 | } |
| 90 | } |
| 91 | |
| 92 | MimeInfo *procmime_mimeinfo_insert(MimeInfo *parent, MimeInfo *mimeinfo) |
| 93 | {
|
| 94 | MimeInfo *child = parent->children; |
| 95 | |
| 96 | if (!child)
|
| 97 | parent->children = mimeinfo; |
| 98 | else {
|
| 99 | while (child->next != NULL) |
| 100 | child = child->next; |
| 101 | |
| 102 | child->next = mimeinfo; |
| 103 | } |
| 104 | |
| 105 | mimeinfo->parent = parent; |
| 106 | mimeinfo->level = parent->level + 1;
|
| 107 | |
| 108 | return mimeinfo;
|
| 109 | } |
| 110 | |
| 111 | void procmime_mimeinfo_replace(MimeInfo *old, MimeInfo *new)
|
| 112 | {
|
| 113 | MimeInfo *parent = old->parent; |
| 114 | MimeInfo *child; |
| 115 | |
| 116 | g_return_if_fail(parent != NULL);
|
| 117 | g_return_if_fail(new->next == NULL);
|
| 118 | |
| 119 | for (child = parent->children; child && child != old;
|
| 120 | child = child->next) |
| 121 | ; |
| 122 | if (!child) {
|
| 123 | g_warning("oops: parent can't find it's own child");
|
| 124 | return;
|
| 125 | } |
| 126 | procmime_mimeinfo_free_all(old); |
| 127 | |
| 128 | if (child == parent->children) {
|
| 129 | new->next = parent->children->next; |
| 130 | parent->children = new; |
| 131 | } else {
|
| 132 | new->next = child->next; |
| 133 | child = new; |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | MimeInfo *procmime_mimeinfo_next(MimeInfo *mimeinfo) |
| 138 | {
|
| 139 | if (!mimeinfo) return NULL; |
| 140 | |
| 141 | if (mimeinfo->children)
|
| 142 | return mimeinfo->children;
|
| 143 | if (mimeinfo->sub)
|
| 144 | return mimeinfo->sub;
|
| 145 | if (mimeinfo->next)
|
| 146 | return mimeinfo->next;
|
| 147 | |
| 148 | if (mimeinfo->main) {
|
| 149 | mimeinfo = mimeinfo->main; |
| 150 | if (mimeinfo->next)
|
| 151 | return mimeinfo->next;
|
| 152 | } |
| 153 | |
| 154 | for (mimeinfo = mimeinfo->parent; mimeinfo != NULL; |
| 155 | mimeinfo = mimeinfo->parent) {
|
| 156 | if (mimeinfo->next)
|
| 157 | return mimeinfo->next;
|
| 158 | if (mimeinfo->main) {
|
| 159 | mimeinfo = mimeinfo->main; |
| 160 | if (mimeinfo->next)
|
| 161 | return mimeinfo->next;
|
| 162 | } |
| 163 | } |
| 164 | |
| 165 | return NULL; |
| 166 | } |
| 167 | |
| 168 | #if 0
|
| 169 | void procmime_dump_mimeinfo(MimeInfo *mimeinfo) |
| 170 | {
|
| 171 | gint i; |
| 172 | |
| 173 | g_print("\n");
|
| 174 | |
| 175 | for (; mimeinfo != NULL; mimeinfo = procmime_mimeinfo_next(mimeinfo)) {
|
| 176 | for (i = 0; i < mimeinfo->level; i++) |
| 177 | g_print(" ");
|
| 178 | g_print("%s%s\n", mimeinfo->main ? "sub: " : "",
|
| 179 | mimeinfo->content_type); |
| 180 | } |
| 181 | } |
| 182 | #endif |
| 183 | |
| 184 | MimeInfo *procmime_scan_message(MsgInfo *msginfo) |
| 185 | {
|
| 186 | FILE *fp; |
| 187 | MimeInfo *mimeinfo; |
| 188 | |
| 189 | g_return_val_if_fail(msginfo != NULL, NULL); |
| 190 | |
| 191 | #if USE_GPGME
|
| 192 | if ((fp = procmsg_open_message_decrypted(msginfo, &mimeinfo)) == NULL) |
| 193 | return NULL; |
| 194 | #else
|
| 195 | if ((fp = procmsg_open_message(msginfo)) == NULL) return NULL; |
| 196 | mimeinfo = procmime_scan_mime_header(fp); |
| 197 | #endif
|
| 198 | |
| 199 | if (mimeinfo) {
|
| 200 | mimeinfo->size = msginfo->size; |
| 201 | mimeinfo->content_size = get_left_file_size(fp); |
| 202 | if (mimeinfo->encoding_type == ENC_BASE64)
|
| 203 | mimeinfo->content_size = mimeinfo->content_size / 4 * 3; |
| 204 | if (mimeinfo->mime_type == MIME_MULTIPART ||
|
| 205 | mimeinfo->mime_type == MIME_MESSAGE_RFC822) |
| 206 | procmime_scan_multipart_message(mimeinfo, fp); |
| 207 | } |
| 208 | |
| 209 | fclose(fp); |
| 210 | |
| 211 | return mimeinfo;
|
| 212 | } |
| 213 | |
| 214 | void procmime_scan_multipart_message(MimeInfo *mimeinfo, FILE *fp)
|
| 215 | {
|
| 216 | gchar *p; |
| 217 | gchar *boundary; |
| 218 | gint boundary_len = 0;
|
| 219 | gchar buf[BUFFSIZE]; |
| 220 | glong fpos, prev_fpos; |
| 221 | |
| 222 | g_return_if_fail(mimeinfo != NULL);
|
| 223 | g_return_if_fail(mimeinfo->mime_type == MIME_MULTIPART || |
| 224 | mimeinfo->mime_type == MIME_MESSAGE_RFC822); |
| 225 | |
| 226 | if (mimeinfo->mime_type == MIME_MULTIPART) {
|
| 227 | g_return_if_fail(mimeinfo->boundary != NULL);
|
| 228 | g_return_if_fail(mimeinfo->sub == NULL);
|
| 229 | } |
| 230 | g_return_if_fail(fp != NULL);
|
| 231 | |
| 232 | boundary = mimeinfo->boundary; |
| 233 | |
| 234 | if (boundary) {
|
| 235 | boundary_len = strlen(boundary); |
| 236 | |
| 237 | /* look for first boundary */
|
| 238 | while ((p = fgets(buf, sizeof(buf), fp)) != NULL) |
| 239 | if (IS_BOUNDARY(buf, boundary, boundary_len)) break; |
| 240 | if (!p) return; |
| 241 | } else if (mimeinfo->parent && mimeinfo->parent->boundary) { |
| 242 | boundary = mimeinfo->parent->boundary; |
| 243 | boundary_len = strlen(boundary); |
| 244 | } |
| 245 | |
| 246 | if ((fpos = ftell(fp)) < 0) { |
| 247 | perror("ftell");
|
| 248 | return;
|
| 249 | } |
| 250 | |
| 251 | for (;;) {
|
| 252 | MimeInfo *partinfo; |
| 253 | gboolean eom = FALSE; |
| 254 | glong content_pos; |
| 255 | gboolean is_base64; |
| 256 | gint len; |
| 257 | guint b64_content_len = 0;
|
| 258 | gint b64_pad_len = 0;
|
| 259 | |
| 260 | prev_fpos = fpos; |
| 261 | debug_print("prev_fpos: %ld\n", fpos);
|
| 262 | |
| 263 | /* scan part header */
|
| 264 | if (mimeinfo->mime_type == MIME_MESSAGE_RFC822) {
|
| 265 | MimeInfo *sub; |
| 266 | |
| 267 | mimeinfo->sub = sub = procmime_scan_mime_header(fp); |
| 268 | if (!sub) break; |
| 269 | |
| 270 | debug_print("message/rfc822 part found\n");
|
| 271 | sub->level = mimeinfo->level + 1;
|
| 272 | sub->parent = mimeinfo->parent; |
| 273 | sub->main = mimeinfo; |
| 274 | |
| 275 | partinfo = sub; |
| 276 | } else {
|
| 277 | partinfo = procmime_scan_mime_header(fp); |
| 278 | if (!partinfo) break; |
| 279 | procmime_mimeinfo_insert(mimeinfo, partinfo); |
| 280 | debug_print("content-type: %s\n",
|
| 281 | partinfo->content_type); |
| 282 | } |
| 283 | |
| 284 | /* begin content */
|
| 285 | content_pos = ftell(fp); |
| 286 | debug_print("content_pos: %ld\n", content_pos);
|
| 287 | |
| 288 | if (partinfo->mime_type == MIME_MULTIPART ||
|
| 289 | partinfo->mime_type == MIME_MESSAGE_RFC822) {
|
| 290 | if (partinfo->level < 8) |
| 291 | procmime_scan_multipart_message(partinfo, fp); |
| 292 | } |
| 293 | |
| 294 | /* look for next boundary */
|
| 295 | buf[0] = '\0'; |
| 296 | is_base64 = partinfo->encoding_type == ENC_BASE64; |
| 297 | while ((p = fgets(buf, sizeof(buf), fp)) != NULL) { |
| 298 | if (IS_BOUNDARY(buf, boundary, boundary_len)) {
|
| 299 | if (buf[2 + boundary_len] == '-' && |
| 300 | buf[2 + boundary_len + 1] == '-') |
| 301 | eom = TRUE; |
| 302 | break;
|
| 303 | } else if (is_base64) { |
| 304 | const gchar *s;
|
| 305 | for (s = buf; *s && *s != '\r' && *s != '\n'; |
| 306 | ++s) |
| 307 | if (*s == '=') |
| 308 | ++b64_pad_len; |
| 309 | b64_content_len += s - buf; |
| 310 | } |
| 311 | } |
| 312 | if (p == NULL) { |
| 313 | /* broken MIME, or single part MIME message */
|
| 314 | buf[0] = '\0'; |
| 315 | eom = TRUE; |
| 316 | } |
| 317 | debug_print("boundary: %s\n", buf);
|
| 318 | |
| 319 | fpos = ftell(fp); |
| 320 | debug_print("fpos: %ld\n", fpos);
|
| 321 | |
| 322 | len = strlen(buf); |
| 323 | partinfo->size = fpos - prev_fpos - len; |
| 324 | if (is_base64)
|
| 325 | partinfo->content_size = |
| 326 | b64_content_len / 4 * 3 - b64_pad_len; |
| 327 | else
|
| 328 | partinfo->content_size = fpos - content_pos - len; |
| 329 | debug_print("partinfo->size: %d\n", partinfo->size);
|
| 330 | debug_print("partinfo->content_size: %d\n",
|
| 331 | partinfo->content_size); |
| 332 | if (partinfo->sub && !partinfo->sub->sub &&
|
| 333 | !partinfo->sub->children) {
|
| 334 | partinfo->sub->size = |
| 335 | fpos - partinfo->sub->fpos - strlen(buf); |
| 336 | debug_print("partinfo->sub->size: %d\n",
|
| 337 | partinfo->sub->size); |
| 338 | } |
| 339 | |
| 340 | if (mimeinfo->mime_type == MIME_MESSAGE_RFC822) {
|
| 341 | if (len > 0 && fseek(fp, fpos - len, SEEK_SET) < 0) |
| 342 | perror("fseek");
|
| 343 | break;
|
| 344 | } |
| 345 | |
| 346 | if (eom) break; |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | void procmime_scan_encoding(MimeInfo *mimeinfo, const gchar *encoding) |
| 351 | {
|
| 352 | gchar *buf; |
| 353 | |
| 354 | Xstrdup_a(buf, encoding, return);
|
| 355 | |
| 356 | g_free(mimeinfo->encoding); |
| 357 | |
| 358 | mimeinfo->encoding = g_strdup(g_strstrip(buf)); |
| 359 | if (!g_ascii_strcasecmp(buf, "7bit")) |
| 360 | mimeinfo->encoding_type = ENC_7BIT; |
| 361 | else if (!g_ascii_strcasecmp(buf, "8bit")) |
| 362 | mimeinfo->encoding_type = ENC_8BIT; |
| 363 | else if (!g_ascii_strcasecmp(buf, "quoted-printable")) |
| 364 | mimeinfo->encoding_type = ENC_QUOTED_PRINTABLE; |
| 365 | else if (!g_ascii_strcasecmp(buf, "base64")) |
| 366 | mimeinfo->encoding_type = ENC_BASE64; |
| 367 | else if (!g_ascii_strcasecmp(buf, "x-uuencode")) |
| 368 | mimeinfo->encoding_type = ENC_X_UUENCODE; |
| 369 | else
|
| 370 | mimeinfo->encoding_type = ENC_UNKNOWN; |
| 371 | |
| 372 | } |
| 373 | |
| 374 | void procmime_scan_content_type(MimeInfo *mimeinfo, const gchar *content_type) |
| 375 | {
|
| 376 | g_free(mimeinfo->content_type); |
| 377 | g_free(mimeinfo->charset); |
| 378 | g_free(mimeinfo->name); |
| 379 | g_free(mimeinfo->boundary); |
| 380 | mimeinfo->content_type = NULL;
|
| 381 | mimeinfo->charset = NULL;
|
| 382 | mimeinfo->name = NULL;
|
| 383 | mimeinfo->boundary = NULL;
|
| 384 | |
| 385 | procmime_scan_content_type_str(content_type, &mimeinfo->content_type, |
| 386 | &mimeinfo->charset, &mimeinfo->name, |
| 387 | &mimeinfo->boundary); |
| 388 | |
| 389 | mimeinfo->mime_type = procmime_scan_mime_type(mimeinfo->content_type); |
| 390 | if (mimeinfo->mime_type == MIME_MULTIPART && !mimeinfo->boundary)
|
| 391 | mimeinfo->mime_type = MIME_TEXT; |
| 392 | } |
| 393 | |
| 394 | void procmime_scan_content_type_str(const gchar *content_type, |
| 395 | gchar **mime_type, gchar **charset, |
| 396 | gchar **name, gchar **boundary) |
| 397 | {
|
| 398 | gchar *delim, *p; |
| 399 | gchar *buf; |
| 400 | |
| 401 | Xstrdup_a(buf, content_type, return);
|
| 402 | |
| 403 | if ((delim = strchr(buf, ';'))) *delim = '\0'; |
| 404 | if (mime_type)
|
| 405 | *mime_type = g_strdup(g_strstrip(buf)); |
| 406 | |
| 407 | if (!delim) return; |
| 408 | p = delim + 1;
|
| 409 | |
| 410 | for (;;) {
|
| 411 | gchar *eq; |
| 412 | gchar *attr, *value; |
| 413 | |
| 414 | if ((delim = strchr(p, ';'))) *delim = '\0'; |
| 415 | |
| 416 | if (!(eq = strchr(p, '='))) break; |
| 417 | |
| 418 | *eq = '\0';
|
| 419 | attr = p; |
| 420 | g_strstrip(attr); |
| 421 | value = eq + 1;
|
| 422 | g_strstrip(value); |
| 423 | |
| 424 | if (*value == '"') |
| 425 | extract_quote(value, '"');
|
| 426 | else {
|
| 427 | eliminate_parenthesis(value, '(', ')'); |
| 428 | g_strstrip(value); |
| 429 | } |
| 430 | |
| 431 | if (*value) {
|
| 432 | if (charset && !g_ascii_strcasecmp(attr, "charset")) |
| 433 | *charset = g_strdup(value); |
| 434 | else if (name && !g_ascii_strcasecmp(attr, "name")) |
| 435 | *name = conv_unmime_header(value, NULL);
|
| 436 | else if (boundary && |
| 437 | !g_ascii_strcasecmp(attr, "boundary"))
|
| 438 | *boundary = g_strdup(value); |
| 439 | } |
| 440 | |
| 441 | if (!delim) break; |
| 442 | p = delim + 1;
|
| 443 | } |
| 444 | } |
| 445 | |
| 446 | void procmime_scan_content_disposition(MimeInfo *mimeinfo,
|
| 447 | const gchar *content_disposition)
|
| 448 | {
|
| 449 | gchar *delim, *p, *dispos; |
| 450 | gchar *buf; |
| 451 | |
| 452 | Xstrdup_a(buf, content_disposition, return);
|
| 453 | |
| 454 | if ((delim = strchr(buf, ';'))) *delim = '\0'; |
| 455 | mimeinfo->content_disposition = dispos = g_strdup(g_strstrip(buf)); |
| 456 | |
| 457 | if (!delim) return; |
| 458 | p = delim + 1;
|
| 459 | |
| 460 | for (;;) {
|
| 461 | gchar *eq; |
| 462 | gchar *attr, *value; |
| 463 | |
| 464 | if ((delim = strchr(p, ';'))) *delim = '\0'; |
| 465 | |
| 466 | if (!(eq = strchr(p, '='))) break; |
| 467 | |
| 468 | *eq = '\0';
|
| 469 | attr = p; |
| 470 | g_strstrip(attr); |
| 471 | value = eq + 1;
|
| 472 | g_strstrip(value); |
| 473 | |
| 474 | if (*value == '"') |
| 475 | extract_quote(value, '"');
|
| 476 | else {
|
| 477 | eliminate_parenthesis(value, '(', ')'); |
| 478 | g_strstrip(value); |
| 479 | } |
| 480 | |
| 481 | if (*value) {
|
| 482 | if (!g_ascii_strcasecmp(attr, "filename")) { |
| 483 | g_free(mimeinfo->filename); |
| 484 | mimeinfo->filename = |
| 485 | conv_unmime_header(value, NULL);
|
| 486 | break;
|
| 487 | } |
| 488 | } |
| 489 | |
| 490 | if (!delim) break; |
| 491 | p = delim + 1;
|
| 492 | } |
| 493 | } |
| 494 | |
| 495 | enum
|
| 496 | {
|
| 497 | H_CONTENT_TRANSFER_ENCODING = 0,
|
| 498 | H_CONTENT_TYPE = 1,
|
| 499 | H_CONTENT_DISPOSITION = 2
|
| 500 | }; |
| 501 | |
| 502 | MimeInfo *procmime_scan_mime_header(FILE *fp) |
| 503 | {
|
| 504 | static HeaderEntry hentry[] = {{"Content-Transfer-Encoding:", |
| 505 | NULL, FALSE},
|
| 506 | {"Content-Type:", NULL, TRUE},
|
| 507 | {"Content-Disposition:",
|
| 508 | NULL, TRUE},
|
| 509 | {NULL, NULL, FALSE}};
|
| 510 | gchar buf[BUFFSIZE]; |
| 511 | gint hnum; |
| 512 | HeaderEntry *hp; |
| 513 | MimeInfo *mimeinfo; |
| 514 | |
| 515 | g_return_val_if_fail(fp != NULL, NULL); |
| 516 | |
| 517 | mimeinfo = procmime_mimeinfo_new(); |
| 518 | mimeinfo->mime_type = MIME_TEXT; |
| 519 | mimeinfo->encoding_type = ENC_7BIT; |
| 520 | mimeinfo->fpos = ftell(fp); |
| 521 | |
| 522 | while ((hnum = procheader_get_one_field(buf, sizeof(buf), fp, hentry)) |
| 523 | != -1) {
|
| 524 | hp = hentry + hnum; |
| 525 | |
| 526 | if (H_CONTENT_TRANSFER_ENCODING == hnum) {
|
| 527 | procmime_scan_encoding |
| 528 | (mimeinfo, buf + strlen(hp->name)); |
| 529 | } else if (H_CONTENT_TYPE == hnum) { |
| 530 | procmime_scan_content_type |
| 531 | (mimeinfo, buf + strlen(hp->name)); |
| 532 | } else if (H_CONTENT_DISPOSITION == hnum) { |
| 533 | procmime_scan_content_disposition |
| 534 | (mimeinfo, buf + strlen(hp->name)); |
| 535 | } |
| 536 | } |
| 537 | |
| 538 | if (mimeinfo->mime_type == MIME_APPLICATION_OCTET_STREAM &&
|
| 539 | mimeinfo->name) {
|
| 540 | const gchar *type;
|
| 541 | type = procmime_get_mime_type(mimeinfo->name); |
| 542 | if (type)
|
| 543 | mimeinfo->mime_type = procmime_scan_mime_type(type); |
| 544 | } |
| 545 | |
| 546 | if (!mimeinfo->content_type)
|
| 547 | mimeinfo->content_type = g_strdup("text/plain");
|
| 548 | |
| 549 | return mimeinfo;
|
| 550 | } |
| 551 | |
| 552 | FILE *procmime_decode_content(FILE *outfp, FILE *infp, MimeInfo *mimeinfo) |
| 553 | {
|
| 554 | gchar buf[BUFFSIZE]; |
| 555 | gchar *boundary = NULL;
|
| 556 | gint boundary_len = 0;
|
| 557 | gboolean tmp_file = FALSE; |
| 558 | |
| 559 | g_return_val_if_fail(infp != NULL, NULL); |
| 560 | g_return_val_if_fail(mimeinfo != NULL, NULL); |
| 561 | |
| 562 | if (!outfp) {
|
| 563 | outfp = my_tmpfile(); |
| 564 | if (!outfp) {
|
| 565 | perror("tmpfile");
|
| 566 | return NULL; |
| 567 | } |
| 568 | tmp_file = TRUE; |
| 569 | } |
| 570 | |
| 571 | if (mimeinfo->parent && mimeinfo->parent->boundary) {
|
| 572 | boundary = mimeinfo->parent->boundary; |
| 573 | boundary_len = strlen(boundary); |
| 574 | } |
| 575 | |
| 576 | if (mimeinfo->encoding_type == ENC_QUOTED_PRINTABLE) {
|
| 577 | while (fgets(buf, sizeof(buf), infp) != NULL && |
| 578 | (!boundary || |
| 579 | !IS_BOUNDARY(buf, boundary, boundary_len))) {
|
| 580 | gint len; |
| 581 | len = qp_decode_line(buf); |
| 582 | fwrite(buf, len, 1, outfp);
|
| 583 | } |
| 584 | } else if (mimeinfo->encoding_type == ENC_BASE64) { |
| 585 | gchar outbuf[BUFFSIZE]; |
| 586 | gint len; |
| 587 | Base64Decoder *decoder; |
| 588 | gboolean uncanonicalize = FALSE; |
| 589 | FILE *tmpfp = outfp; |
| 590 | ContentType content_type; |
| 591 | |
| 592 | content_type = procmime_scan_mime_type(mimeinfo->content_type); |
| 593 | if (content_type == MIME_TEXT ||
|
| 594 | content_type == MIME_TEXT_HTML || |
| 595 | content_type == MIME_MESSAGE_RFC822) {
|
| 596 | uncanonicalize = TRUE; |
| 597 | tmpfp = my_tmpfile(); |
| 598 | if (!tmpfp) {
|
| 599 | perror("tmpfile");
|
| 600 | if (tmp_file) fclose(outfp);
|
| 601 | return NULL; |
| 602 | } |
| 603 | } |
| 604 | |
| 605 | decoder = base64_decoder_new(); |
| 606 | while (fgets(buf, sizeof(buf), infp) != NULL && |
| 607 | (!boundary || |
| 608 | !IS_BOUNDARY(buf, boundary, boundary_len))) {
|
| 609 | len = base64_decoder_decode(decoder, buf, outbuf); |
| 610 | if (len < 0) { |
| 611 | g_warning("Bad BASE64 content\n");
|
| 612 | break;
|
| 613 | } |
| 614 | fwrite(outbuf, sizeof(gchar), len, tmpfp);
|
| 615 | } |
| 616 | base64_decoder_free(decoder); |
| 617 | |
| 618 | if (uncanonicalize) {
|
| 619 | rewind(tmpfp); |
| 620 | while (fgets(buf, sizeof(buf), tmpfp) != NULL) { |
| 621 | strcrchomp(buf); |
| 622 | fputs(buf, outfp); |
| 623 | } |
| 624 | fclose(tmpfp); |
| 625 | } |
| 626 | } else if (mimeinfo->encoding_type == ENC_X_UUENCODE) { |
| 627 | gchar outbuf[BUFFSIZE]; |
| 628 | gint len; |
| 629 | gboolean flag = FALSE; |
| 630 | |
| 631 | while (fgets(buf, sizeof(buf), infp) != NULL && |
| 632 | (!boundary || |
| 633 | !IS_BOUNDARY(buf, boundary, boundary_len))) {
|
| 634 | if(!flag && strncmp(buf,"begin ", 6)) continue; |
| 635 | |
| 636 | if (flag) {
|
| 637 | len = fromuutobits(outbuf, buf); |
| 638 | if (len <= 0) { |
| 639 | if (len < 0) |
| 640 | g_warning("Bad UUENCODE content(%d)\n", len);
|
| 641 | break;
|
| 642 | } |
| 643 | fwrite(outbuf, sizeof(gchar), len, outfp);
|
| 644 | } else
|
| 645 | flag = TRUE; |
| 646 | } |
| 647 | } else {
|
| 648 | while (fgets(buf, sizeof(buf), infp) != NULL && |
| 649 | (!boundary || |
| 650 | !IS_BOUNDARY(buf, boundary, boundary_len))) {
|
| 651 | fputs(buf, outfp); |
| 652 | } |
| 653 | } |
| 654 | |
| 655 | if (tmp_file) rewind(outfp);
|
| 656 | return outfp;
|
| 657 | } |
| 658 | |
| 659 | gint procmime_get_part(const gchar *outfile, const gchar *infile, |
| 660 | MimeInfo *mimeinfo) |
| 661 | {
|
| 662 | FILE *infp; |
| 663 | gint ret; |
| 664 | |
| 665 | g_return_val_if_fail(outfile != NULL, -1); |
| 666 | g_return_val_if_fail(infile != NULL, -1); |
| 667 | g_return_val_if_fail(mimeinfo != NULL, -1); |
| 668 | |
| 669 | if ((infp = g_fopen(infile, "rb")) == NULL) { |
| 670 | FILE_OP_ERROR(infile, "fopen");
|
| 671 | return -1; |
| 672 | } |
| 673 | ret = procmime_get_part_fp(outfile, infp, mimeinfo); |
| 674 | fclose(infp); |
| 675 | |
| 676 | return ret;
|
| 677 | } |
| 678 | |
| 679 | gint procmime_get_part_fp(const gchar *outfile, FILE *infp, MimeInfo *mimeinfo)
|
| 680 | {
|
| 681 | FILE *outfp; |
| 682 | gchar buf[BUFFSIZE]; |
| 683 | |
| 684 | g_return_val_if_fail(outfile != NULL, -1); |
| 685 | g_return_val_if_fail(infp != NULL, -1); |
| 686 | g_return_val_if_fail(mimeinfo != NULL, -1); |
| 687 | |
| 688 | if (fseek(infp, mimeinfo->fpos, SEEK_SET) < 0) { |
| 689 | FILE_OP_ERROR("procmime_get_part_fp()", "fseek"); |
| 690 | return -1; |
| 691 | } |
| 692 | if ((outfp = g_fopen(outfile, "wb")) == NULL) { |
| 693 | FILE_OP_ERROR(outfile, "fopen");
|
| 694 | return -1; |
| 695 | } |
| 696 | |
| 697 | while (fgets(buf, sizeof(buf), infp) != NULL) |
| 698 | if (buf[0] == '\r' || buf[0] == '\n') break; |
| 699 | |
| 700 | procmime_decode_content(outfp, infp, mimeinfo); |
| 701 | |
| 702 | if (fclose(outfp) == EOF) { |
| 703 | FILE_OP_ERROR(outfile, "fclose");
|
| 704 | g_unlink(outfile); |
| 705 | return -1; |
| 706 | } |
| 707 | |
| 708 | return 0; |
| 709 | } |
| 710 | |
| 711 | FILE *procmime_get_text_content(MimeInfo *mimeinfo, FILE *infp, |
| 712 | const gchar *encoding)
|
| 713 | {
|
| 714 | FILE *tmpfp, *outfp; |
| 715 | const gchar *src_encoding;
|
| 716 | gboolean conv_fail = FALSE; |
| 717 | gchar buf[BUFFSIZE]; |
| 718 | |
| 719 | g_return_val_if_fail(mimeinfo != NULL, NULL); |
| 720 | g_return_val_if_fail(infp != NULL, NULL); |
| 721 | g_return_val_if_fail(mimeinfo->mime_type == MIME_TEXT || |
| 722 | mimeinfo->mime_type == MIME_TEXT_HTML, NULL);
|
| 723 | |
| 724 | if (fseek(infp, mimeinfo->fpos, SEEK_SET) < 0) { |
| 725 | perror("fseek");
|
| 726 | return NULL; |
| 727 | } |
| 728 | |
| 729 | while (fgets(buf, sizeof(buf), infp) != NULL) |
| 730 | if (buf[0] == '\r' || buf[0] == '\n') break; |
| 731 | |
| 732 | tmpfp = procmime_decode_content(NULL, infp, mimeinfo);
|
| 733 | if (!tmpfp)
|
| 734 | return NULL; |
| 735 | |
| 736 | if ((outfp = my_tmpfile()) == NULL) { |
| 737 | perror("tmpfile");
|
| 738 | fclose(tmpfp); |
| 739 | return NULL; |
| 740 | } |
| 741 | |
| 742 | src_encoding = prefs_common.force_charset |
| 743 | ? prefs_common.force_charset : mimeinfo->charset; |
| 744 | |
| 745 | if (mimeinfo->mime_type == MIME_TEXT) {
|
| 746 | while (fgets(buf, sizeof(buf), tmpfp) != NULL) { |
| 747 | gchar *str; |
| 748 | |
| 749 | str = conv_codeset_strdup(buf, src_encoding, encoding); |
| 750 | if (str) {
|
| 751 | fputs(str, outfp); |
| 752 | g_free(str); |
| 753 | } else {
|
| 754 | conv_fail = TRUE; |
| 755 | fputs(buf, outfp); |
| 756 | } |
| 757 | } |
| 758 | } else if (mimeinfo->mime_type == MIME_TEXT_HTML) { |
| 759 | HTMLParser *parser; |
| 760 | CodeConverter *conv; |
| 761 | const gchar *str;
|
| 762 | |
| 763 | conv = conv_code_converter_new(src_encoding, encoding); |
| 764 | parser = html_parser_new(tmpfp, conv); |
| 765 | while ((str = html_parse(parser)) != NULL) { |
| 766 | fputs(str, outfp); |
| 767 | } |
| 768 | html_parser_destroy(parser); |
| 769 | conv_code_converter_destroy(conv); |
| 770 | } |
| 771 | |
| 772 | if (conv_fail)
|
| 773 | g_warning(_("procmime_get_text_content(): Code conversion failed.\n"));
|
| 774 | |
| 775 | fclose(tmpfp); |
| 776 | rewind(outfp); |
| 777 | |
| 778 | return outfp;
|
| 779 | } |
| 780 | |
| 781 | /* search the first text part of (multipart) MIME message,
|
| 782 | decode, convert it and output to outfp. */ |
| 783 | FILE *procmime_get_first_text_content(MsgInfo *msginfo, const gchar *encoding)
|
| 784 | {
|
| 785 | FILE *infp, *outfp = NULL;
|
| 786 | MimeInfo *mimeinfo, *partinfo; |
| 787 | |
| 788 | g_return_val_if_fail(msginfo != NULL, NULL); |
| 789 | |
| 790 | mimeinfo = procmime_scan_message(msginfo); |
| 791 | if (!mimeinfo) return NULL; |
| 792 | |
| 793 | if ((infp = procmsg_open_message(msginfo)) == NULL) { |
| 794 | procmime_mimeinfo_free_all(mimeinfo); |
| 795 | return NULL; |
| 796 | } |
| 797 | |
| 798 | partinfo = mimeinfo; |
| 799 | while (partinfo && partinfo->mime_type != MIME_TEXT)
|
| 800 | partinfo = procmime_mimeinfo_next(partinfo); |
| 801 | if (!partinfo) {
|
| 802 | partinfo = mimeinfo; |
| 803 | while (partinfo && partinfo->mime_type != MIME_TEXT_HTML)
|
| 804 | partinfo = procmime_mimeinfo_next(partinfo); |
| 805 | } |
| 806 | |
| 807 | if (partinfo)
|
| 808 | outfp = procmime_get_text_content(partinfo, infp, encoding); |
| 809 | |
| 810 | fclose(infp); |
| 811 | procmime_mimeinfo_free_all(mimeinfo); |
| 812 | |
| 813 | return outfp;
|
| 814 | } |
| 815 | |
| 816 | gboolean procmime_find_string_part(MimeInfo *mimeinfo, const gchar *filename,
|
| 817 | const gchar *str, StrFindFunc find_func)
|
| 818 | {
|
| 819 | |
| 820 | FILE *infp, *outfp; |
| 821 | gchar buf[BUFFSIZE]; |
| 822 | |
| 823 | g_return_val_if_fail(mimeinfo != NULL, FALSE);
|
| 824 | g_return_val_if_fail(mimeinfo->mime_type == MIME_TEXT || |
| 825 | mimeinfo->mime_type == MIME_TEXT_HTML, FALSE); |
| 826 | g_return_val_if_fail(str != NULL, FALSE);
|
| 827 | g_return_val_if_fail(find_func != NULL, FALSE);
|
| 828 | |
| 829 | if ((infp = g_fopen(filename, "rb")) == NULL) { |
| 830 | FILE_OP_ERROR(filename, "fopen");
|
| 831 | return FALSE;
|
| 832 | } |
| 833 | |
| 834 | outfp = procmime_get_text_content(mimeinfo, infp, NULL);
|
| 835 | fclose(infp); |
| 836 | |
| 837 | if (!outfp)
|
| 838 | return FALSE;
|
| 839 | |
| 840 | while (fgets(buf, sizeof(buf), outfp) != NULL) { |
| 841 | strretchomp(buf); |
| 842 | if (find_func(buf, str)) {
|
| 843 | fclose(outfp); |
| 844 | return TRUE;
|
| 845 | } |
| 846 | } |
| 847 | |
| 848 | fclose(outfp); |
| 849 | |
| 850 | return FALSE;
|
| 851 | } |
| 852 | |
| 853 | gboolean procmime_find_string(MsgInfo *msginfo, const gchar *str,
|
| 854 | StrFindFunc find_func) |
| 855 | {
|
| 856 | MimeInfo *mimeinfo; |
| 857 | MimeInfo *partinfo; |
| 858 | gchar *filename; |
| 859 | gboolean found = FALSE; |
| 860 | |
| 861 | g_return_val_if_fail(msginfo != NULL, FALSE);
|
| 862 | g_return_val_if_fail(str != NULL, FALSE);
|
| 863 | g_return_val_if_fail(find_func != NULL, FALSE);
|
| 864 | |
| 865 | filename = procmsg_get_message_file(msginfo); |
| 866 | if (!filename) return FALSE; |
| 867 | mimeinfo = procmime_scan_message(msginfo); |
| 868 | |
| 869 | for (partinfo = mimeinfo; partinfo != NULL; |
| 870 | partinfo = procmime_mimeinfo_next(partinfo)) {
|
| 871 | if (partinfo->mime_type == MIME_TEXT ||
|
| 872 | partinfo->mime_type == MIME_TEXT_HTML) {
|
| 873 | if (procmime_find_string_part
|
| 874 | (partinfo, filename, str, find_func) == TRUE) {
|
| 875 | found = TRUE; |
| 876 | break;
|
| 877 | } |
| 878 | } |
| 879 | } |
| 880 | |
| 881 | procmime_mimeinfo_free_all(mimeinfo); |
| 882 | g_free(filename); |
| 883 | |
| 884 | return found;
|
| 885 | } |
| 886 | |
| 887 | gchar *procmime_get_part_file_name(MimeInfo *mimeinfo) |
| 888 | {
|
| 889 | gchar *base; |
| 890 | const gchar *base_;
|
| 891 | |
| 892 | base_ = mimeinfo->filename ? mimeinfo->filename |
| 893 | : mimeinfo->name ? mimeinfo->name : "mimetmp";
|
| 894 | base_ = g_basename(base_); |
| 895 | if (*base_ == '\0') base_ = "mimetmp"; |
| 896 | base = conv_filename_from_utf8(base_); |
| 897 | subst_for_filename(base); |
| 898 | |
| 899 | return base;
|
| 900 | } |
| 901 | |
| 902 | gchar *procmime_get_tmp_file_name(MimeInfo *mimeinfo) |
| 903 | {
|
| 904 | static guint32 id = 0; |
| 905 | gchar *base; |
| 906 | gchar *filename; |
| 907 | gchar f_prefix[10];
|
| 908 | |
| 909 | g_return_val_if_fail(mimeinfo != NULL, NULL); |
| 910 | |
| 911 | g_snprintf(f_prefix, sizeof(f_prefix), "%08x.", id++); |
| 912 | |
| 913 | if (MIME_TEXT_HTML == mimeinfo->mime_type)
|
| 914 | base = g_strdup("mimetmp.html");
|
| 915 | else
|
| 916 | base = procmime_get_part_file_name(mimeinfo); |
| 917 | |
| 918 | filename = g_strconcat(get_mime_tmp_dir(), G_DIR_SEPARATOR_S, |
| 919 | f_prefix, base, NULL);
|
| 920 | |
| 921 | g_free(base); |
| 922 | |
| 923 | return filename;
|
| 924 | } |
| 925 | |
| 926 | ContentType procmime_scan_mime_type(const gchar *mime_type)
|
| 927 | {
|
| 928 | ContentType type; |
| 929 | |
| 930 | if (!g_ascii_strncasecmp(mime_type, "text/html", 9)) |
| 931 | type = MIME_TEXT_HTML; |
| 932 | else if (!g_ascii_strncasecmp(mime_type, "text/", 5)) |
| 933 | type = MIME_TEXT; |
| 934 | else if (!g_ascii_strncasecmp(mime_type, "message/rfc822", 14)) |
| 935 | type = MIME_MESSAGE_RFC822; |
| 936 | else if (!g_ascii_strncasecmp(mime_type, "message/", 8)) |
| 937 | type = MIME_TEXT; |
| 938 | else if (!g_ascii_strncasecmp(mime_type, "application/octet-stream", |
| 939 | 24))
|
| 940 | type = MIME_APPLICATION_OCTET_STREAM; |
| 941 | else if (!g_ascii_strncasecmp(mime_type, "application/", 12)) |
| 942 | type = MIME_APPLICATION; |
| 943 | else if (!g_ascii_strncasecmp(mime_type, "multipart/", 10)) |
| 944 | type = MIME_MULTIPART; |
| 945 | else if (!g_ascii_strncasecmp(mime_type, "image/", 6)) |
| 946 | type = MIME_IMAGE; |
| 947 | else if (!g_ascii_strncasecmp(mime_type, "audio/", 6)) |
| 948 | type = MIME_AUDIO; |
| 949 | else if (!g_ascii_strcasecmp(mime_type, "text")) |
| 950 | type = MIME_TEXT; |
| 951 | else
|
| 952 | type = MIME_UNKNOWN; |
| 953 | |
| 954 | return type;
|
| 955 | } |
| 956 | |
| 957 | static GList *mime_type_list = NULL; |
| 958 | |
| 959 | gchar *procmime_get_mime_type(const gchar *filename)
|
| 960 | {
|
| 961 | static GHashTable *mime_type_table = NULL; |
| 962 | MimeType *mime_type; |
| 963 | const gchar *p;
|
| 964 | gchar *ext; |
| 965 | |
| 966 | if (!mime_type_table) {
|
| 967 | mime_type_table = procmime_get_mime_type_table(); |
| 968 | if (!mime_type_table) return NULL; |
| 969 | } |
| 970 | |
| 971 | filename = g_basename(filename); |
| 972 | p = strrchr(filename, '.');
|
| 973 | if (!p) return NULL; |
| 974 | |
| 975 | Xstrdup_a(ext, p + 1, return NULL); |
| 976 | g_strdown(ext); |
| 977 | mime_type = g_hash_table_lookup(mime_type_table, ext); |
| 978 | if (mime_type) {
|
| 979 | gchar *str; |
| 980 | |
| 981 | str = g_strconcat(mime_type->type, "/", mime_type->sub_type,
|
| 982 | NULL);
|
| 983 | return str;
|
| 984 | } |
| 985 | |
| 986 | return NULL; |
| 987 | } |
| 988 | |
| 989 | static GHashTable *procmime_get_mime_type_table(void) |
| 990 | {
|
| 991 | GHashTable *table = NULL;
|
| 992 | GList *cur; |
| 993 | MimeType *mime_type; |
| 994 | gchar **exts; |
| 995 | |
| 996 | if (!mime_type_list) {
|
| 997 | GList *list; |
| 998 | gchar *dir; |
| 999 | |
| 1000 | mime_type_list = |
| 1001 | procmime_get_mime_type_list(SYSCONFDIR "/mime.types");
|
| 1002 | if (!mime_type_list) {
|
| 1003 | list = procmime_get_mime_type_list("/etc/mime.types");
|
| 1004 | mime_type_list = g_list_concat(mime_type_list, list); |
| 1005 | } |
| 1006 | dir = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S, RC_DIR, |
| 1007 | G_DIR_SEPARATOR_S, "mime.types", NULL); |
| 1008 | list = procmime_get_mime_type_list(dir); |
| 1009 | g_free(dir); |
| 1010 | mime_type_list = g_list_concat(mime_type_list, list); |
| 1011 | |
| 1012 | if (!mime_type_list) {
|
| 1013 | g_warning("mime.types not found\n");
|
| 1014 | return NULL; |
| 1015 | } |
| 1016 | } |
| 1017 | |
| 1018 | table = g_hash_table_new(g_str_hash, g_str_equal); |
| 1019 | |
| 1020 | for (cur = mime_type_list; cur != NULL; cur = cur->next) { |
| 1021 | gint i; |
| 1022 | gchar *key; |
| 1023 | |
| 1024 | mime_type = (MimeType *)cur->data; |
| 1025 | |
| 1026 | if (!mime_type->extension) continue; |
| 1027 | |
| 1028 | exts = g_strsplit(mime_type->extension, " ", 16); |
| 1029 | for (i = 0; exts[i] != NULL; i++) { |
| 1030 | /* make the key case insensitive */
|
| 1031 | g_strdown(exts[i]); |
| 1032 | /* use previously dup'd key on overwriting */
|
| 1033 | if (g_hash_table_lookup(table, exts[i]))
|
| 1034 | key = exts[i]; |
| 1035 | else
|
| 1036 | key = g_strdup(exts[i]); |
| 1037 | g_hash_table_insert(table, key, mime_type); |
| 1038 | } |
| 1039 | g_strfreev(exts); |
| 1040 | } |
| 1041 | |
| 1042 | return table;
|
| 1043 | } |
| 1044 | |
| 1045 | static GList *procmime_get_mime_type_list(const gchar *file) |
| 1046 | {
|
| 1047 | GList *list = NULL;
|
| 1048 | FILE *fp; |
| 1049 | gchar buf[BUFFSIZE]; |
| 1050 | gchar *p; |
| 1051 | gchar *delim; |
| 1052 | MimeType *mime_type; |
| 1053 | |
| 1054 | if ((fp = g_fopen(file, "rb")) == NULL) return NULL; |
| 1055 | |
| 1056 | debug_print("Reading %s ...\n", file);
|
| 1057 | |
| 1058 | while (fgets(buf, sizeof(buf), fp) != NULL) { |
| 1059 | p = strchr(buf, '#');
|
| 1060 | if (p) *p = '\0'; |
| 1061 | g_strstrip(buf); |
| 1062 | |
| 1063 | p = buf; |
| 1064 | while (*p && !g_ascii_isspace(*p)) p++;
|
| 1065 | if (*p) {
|
| 1066 | *p = '\0';
|
| 1067 | p++; |
| 1068 | } |
| 1069 | delim = strchr(buf, '/');
|
| 1070 | if (delim == NULL) continue; |
| 1071 | *delim = '\0';
|
| 1072 | |
| 1073 | mime_type = g_new(MimeType, 1);
|
| 1074 | mime_type->type = g_strdup(buf); |
| 1075 | mime_type->sub_type = g_strdup(delim + 1);
|
| 1076 | |
| 1077 | while (*p && g_ascii_isspace(*p)) p++;
|
| 1078 | if (*p)
|
| 1079 | mime_type->extension = g_strdup(p); |
| 1080 | else
|
| 1081 | mime_type->extension = NULL;
|
| 1082 | |
| 1083 | list = g_list_append(list, mime_type); |
| 1084 | } |
| 1085 | |
| 1086 | fclose(fp); |
| 1087 | |
| 1088 | if (!list)
|
| 1089 | g_warning("Can't read mime.types\n");
|
| 1090 | |
| 1091 | return list;
|
| 1092 | } |
| 1093 | |
| 1094 | EncodingType procmime_get_encoding_for_charset(const gchar *charset)
|
| 1095 | {
|
| 1096 | if (!charset)
|
| 1097 | return ENC_8BIT;
|
| 1098 | else if (!g_ascii_strncasecmp(charset, "ISO-2022-", 9) || |
| 1099 | !g_ascii_strcasecmp(charset, "US-ASCII"))
|
| 1100 | return ENC_7BIT;
|
| 1101 | else if (!g_ascii_strcasecmp(charset, "ISO-8859-5") || |
| 1102 | !g_ascii_strncasecmp(charset, "KOI8-", 5) || |
| 1103 | !g_ascii_strcasecmp(charset, "Windows-1251"))
|
| 1104 | return ENC_8BIT;
|
| 1105 | else if (!g_ascii_strncasecmp(charset, "ISO-8859-", 9)) |
| 1106 | return ENC_QUOTED_PRINTABLE;
|
| 1107 | else
|
| 1108 | return ENC_8BIT;
|
| 1109 | } |
| 1110 | |
| 1111 | EncodingType procmime_get_encoding_for_text_file(const gchar *file)
|
| 1112 | {
|
| 1113 | FILE *fp; |
| 1114 | guchar buf[BUFFSIZE]; |
| 1115 | size_t len; |
| 1116 | size_t octet_chars = 0;
|
| 1117 | size_t total_len = 0;
|
| 1118 | gfloat octet_percentage; |
| 1119 | |
| 1120 | if ((fp = g_fopen(file, "rb")) == NULL) { |
| 1121 | FILE_OP_ERROR(file, "fopen");
|
| 1122 | return ENC_UNKNOWN;
|
| 1123 | } |
| 1124 | |
| 1125 | while ((len = fread(buf, sizeof(guchar), sizeof(buf), fp)) > 0) { |
| 1126 | guchar *p; |
| 1127 | gint i; |
| 1128 | |
| 1129 | for (p = buf, i = 0; i < len; ++p, ++i) { |
| 1130 | if (*p & 0x80) |
| 1131 | ++octet_chars; |
| 1132 | } |
| 1133 | total_len += len; |
| 1134 | } |
| 1135 | |
| 1136 | fclose(fp); |
| 1137 | |
| 1138 | if (total_len > 0) |
| 1139 | octet_percentage = (gfloat)octet_chars / (gfloat)total_len; |
| 1140 | else
|
| 1141 | octet_percentage = 0.0; |
| 1142 | |
| 1143 | debug_print("procmime_get_encoding_for_text_file(): "
|
| 1144 | "8bit chars: %d / %d (%f%%)\n", octet_chars, total_len,
|
| 1145 | 100.0 * octet_percentage); |
| 1146 | |
| 1147 | if (octet_percentage > 0.20) { |
| 1148 | debug_print("using BASE64\n");
|
| 1149 | return ENC_BASE64;
|
| 1150 | } else if (octet_chars > 0) { |
| 1151 | debug_print("using quoted-printable\n");
|
| 1152 | return ENC_QUOTED_PRINTABLE;
|
| 1153 | } else {
|
| 1154 | debug_print("using 7bit\n");
|
| 1155 | return ENC_7BIT;
|
| 1156 | } |
| 1157 | } |
| 1158 | |
| 1159 | const gchar *procmime_get_encoding_str(EncodingType encoding)
|
| 1160 | {
|
| 1161 | static const gchar *encoding_str[] = { |
| 1162 | "7bit", "8bit", "quoted-printable", "base64", "x-uuencode", |
| 1163 | NULL
|
| 1164 | }; |
| 1165 | |
| 1166 | if (encoding >= ENC_7BIT && encoding <= ENC_UNKNOWN)
|
| 1167 | return encoding_str[encoding];
|
| 1168 | else
|
| 1169 | return NULL; |
| 1170 | } |