1 /* $OpenBSD: mailaddr.c,v 1.5 2021/06/14 17:58:15 eric Exp $ */ 2 3 /* 4 * Copyright (c) 2015 Gilles Chehade <gilles@poolp.org> 5 * 6 * Permission to use, copy, modify, and distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 */ 18 19 #include <stdlib.h> 20 #include <string.h> 21 22 #include "smtpd.h" 23 #include "log.h" 24 25 static int 26 mailaddr_line_split(char **line, char **ret) 27 { 28 static char buffer[LINE_MAX]; 29 int esc, dq, sq; 30 size_t i; 31 char *s; 32 33 memset(buffer, 0, sizeof buffer); 34 esc = dq = sq = 0; 35 i = 0; 36 for (s = *line; (*s) && (i < sizeof(buffer)); ++s) { 37 if (esc) { 38 buffer[i++] = *s; 39 esc = 0; 40 continue; 41 } 42 if (*s == '\\') { 43 esc = 1; 44 continue; 45 } 46 if (*s == ',' && !dq && !sq) { 47 *ret = buffer; 48 *line = s+1; 49 return (1); 50 } 51 52 buffer[i++] = *s; 53 esc = 0; 54 55 if (*s == '"' && !sq) 56 dq ^= 1; 57 if (*s == '\'' && !dq) 58 sq ^= 1; 59 } 60 61 if (esc || dq || sq || i == sizeof(buffer)) 62 return (-1); 63 64 *ret = buffer; 65 *line = s; 66 return (i ? 1 : 0); 67 } 68 69 int 70 mailaddr_line(struct maddrmap *maddrmap, const char *s) 71 { 72 struct maddrnode mn; 73 char *p, *subrcpt, *buffer; 74 int ret; 75 76 if ((buffer = strdup(s)) == NULL) 77 return 0; 78 79 p = buffer; 80 while ((ret = mailaddr_line_split(&p, &subrcpt)) > 0) { 81 subrcpt = strip(subrcpt); 82 if (subrcpt[0] == '\0') 83 continue; 84 if (!text_to_mailaddr(&mn.mailaddr, subrcpt)) { 85 free(buffer); 86 return 0; 87 } 88 log_debug("subrcpt: [%s]", subrcpt); 89 maddrmap_insert(maddrmap, &mn); 90 } 91 92 free(buffer); 93 94 if (ret >= 0) 95 return 1; 96 /* expand_line_split() returned < 0 */ 97 return 0; 98 } 99 100 void 101 maddrmap_init(struct maddrmap *maddrmap) 102 { 103 TAILQ_INIT(&maddrmap->queue); 104 } 105 106 void 107 maddrmap_insert(struct maddrmap *maddrmap, struct maddrnode *maddrnode) 108 { 109 struct maddrnode *mn; 110 111 mn = xmemdup(maddrnode, sizeof *maddrnode); 112 TAILQ_INSERT_TAIL(&maddrmap->queue, mn, entries); 113 } 114 115 void 116 maddrmap_free(struct maddrmap *maddrmap) 117 { 118 struct maddrnode *mn; 119 120 while ((mn = TAILQ_FIRST(&maddrmap->queue))) { 121 TAILQ_REMOVE(&maddrmap->queue, mn, entries); 122 free(mn); 123 } 124 free(maddrmap); 125 } 126