1 /******************************************************************************/
2 /* pfixtools: a collection of postfix related tools */
4 /* ________________________________________________________________________ */
6 /* Redistribution and use in source and binary forms, with or without */
7 /* modification, are permitted provided that the following conditions */
10 /* 1. Redistributions of source code must retain the above copyright */
11 /* notice, this list of conditions and the following disclaimer. */
12 /* 2. Redistributions in binary form must reproduce the above copyright */
13 /* notice, this list of conditions and the following disclaimer in the */
14 /* documentation and/or other materials provided with the distribution. */
15 /* 3. The names of its contributors may not be used to endorse or promote */
16 /* products derived from this software without specific prior written */
19 /* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND */
20 /* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE */
21 /* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR */
22 /* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS */
23 /* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR */
24 /* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF */
25 /* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS */
26 /* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN */
27 /* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) */
28 /* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF */
29 /* THE POSSIBILITY OF SUCH DAMAGE. */
30 /******************************************************************************/
33 * Copyright © 2007 Pierre Habouzit
34 * Copyright © 2008 Florent Bruneau
38 #include "policy_tokens.h"
41 const char *smtp_state_names[SMTP_count] = {
52 bool query_parse(query_t *query, char *p)
54 #define PARSE_CHECK(expr, error, ...) \
57 err(error, ##__VA_ARGS__); \
63 query->state = SMTP_UNKNOWN;
70 p = strchr(k = p, '=');
71 PARSE_CHECK(p, "could not find '=' in line");
72 for (klen = p - k; klen && isblank(k[klen]); klen--);
77 p = strchr(v = p, '\n');
78 PARSE_CHECK(p, "could not find final \\n in line");
79 for (vlen = p - v; vlen && isblank(v[vlen]); vlen--);
82 vtk = policy_tokenize(v, vlen);
83 switch (policy_tokenize(k, klen)) {
84 #define CASE(up, low) case PTK_##up: query->low = v; v[vlen] = '\0'; break;
85 CASE(HELO_NAME, helo_name);
86 CASE(QUEUE_ID, queue_id);
87 CASE(RECIPIENT_COUNT, recipient_count);
88 CASE(CLIENT_ADDRESS, client_address);
89 CASE(CLIENT_NAME, client_name);
90 CASE(REVERSE_CLIENT_NAME, reverse_client_name);
91 CASE(INSTANCE, instance);
92 CASE(SASL_METHOD, sasl_method);
93 CASE(SASL_USERNAME, sasl_username);
94 CASE(SASL_SENDER, sasl_sender);
96 CASE(CCERT_SUBJECT, ccert_subject);
97 CASE(CCERT_ISSUER, ccert_issuer);
98 CASE(CCERT_FINGERPRINT, ccert_fingerprint);
99 CASE(ENCRYPTION_PROTOCOL, encryption_protocol);
100 CASE(ENCRYPTION_CIPHER, encryption_cipher);
101 CASE(ENCRYPTION_KEYSIZE, encryption_keysize);
102 CASE(ETRN_DOMAIN, etrn_domain);
103 CASE(STRESS, stress);
109 query->sender_domain = memchr(query->sender, '@', vlen);
110 if (query->sender_domain != NULL) {
111 ++query->sender_domain;
116 query->recipient = v;
118 query->recipient_domain = memchr(query->recipient, '@', vlen);
119 if (query->recipient_domain != NULL) {
120 ++query->recipient_domain;
125 PARSE_CHECK(vtk == PTK_SMTPD_ACCESS_POLICY,
126 "unexpected `request' value: %.*s", vlen, v);
129 case PTK_PROTOCOL_NAME:
130 PARSE_CHECK(vtk == PTK_SMTP || vtk == PTK_ESMTP,
131 "unexpected `protocol_name' value: %.*s", vlen, v);
132 query->esmtp = vtk == PTK_ESMTP;
135 case PTK_PROTOCOL_STATE:
137 #define CASE(name) case PTK_##name: query->state = SMTP_##name; break;
144 CASE(END_OF_MESSAGE);
148 PARSE_CHECK(false, "unexpected `protocol_state` value: %.*s",
155 warn("unexpected key, skipped: %.*s", klen, k);
160 return query->state != SMTP_UNKNOWN;
164 const char *query_field_for_id(const query_t *query, postlicyd_token id)
167 #define CASE(Up, Low) \
168 case PTK_ ## Up: return query->Low;
169 CASE(HELO_NAME, helo_name)
170 CASE(QUEUE_ID, queue_id)
172 CASE(SENDER_DOMAIN, sender_domain)
173 CASE(RECIPIENT, recipient)
174 CASE(RECIPIENT_DOMAIN, recipient_domain)
175 CASE(RECIPIENT_COUNT, recipient_count)
176 CASE(CLIENT_ADDRESS, client_address)
177 CASE(CLIENT_NAME, client_name)
178 CASE(REVERSE_CLIENT_NAME, reverse_client_name)
179 CASE(INSTANCE, instance)
180 CASE(SASL_METHOD, sasl_method)
181 CASE(SASL_USERNAME, sasl_username)
182 CASE(SASL_SENDER, sasl_sender)
184 CASE(CCERT_SUBJECT, ccert_subject)
185 CASE(CCERT_ISSUER, ccert_issuer)
186 CASE(CCERT_FINGERPRINT, ccert_fingerprint)
187 CASE(ENCRYPTION_PROTOCOL, encryption_protocol)
188 CASE(ENCRYPTION_CIPHER, encryption_cipher)
189 CASE(ENCRYPTION_KEYSIZE, encryption_keysize)
190 CASE(ETRN_DOMAIN, etrn_domain)
193 case PTK_PROTOCOL_NAME:
194 return query->esmtp ? "ESMTP" : "SMTP";
196 case PTK_PROTOCOL_STATE:
197 return smtp_state_names[query->state];
199 default: return NULL;
203 const char *query_field_for_name(const query_t *query, const char *name)
205 postlicyd_token id = policy_tokenize(name, strlen(name));
206 if (id == PTK_UNKNOWN) {
207 warn("unknown query field %s", name);
210 return query_field_for_id(query, id);
213 ssize_t query_format(char *dest, size_t len, const char *fmt, const query_t *query)
217 const char *end = fmt + m_strlen(fmt);
219 #define WRITE(Src, Len) \
221 size_t __len = (Len); \
222 if (written < len) { \
223 size_t __to_write = MIN(len - written - 1, __len); \
224 memcpy(dest + written, (Src), __to_write); \
225 written += __to_write; \
229 while (*fmt != '\0') {
230 const char *next_format = strstr(fmt, "${");
231 if (next_format == NULL) {
234 WRITE(fmt, next_format - fmt);
238 next_format = strchr(fmt, '}');
239 if (next_format == NULL) {
243 postlicyd_token tok = policy_tokenize(fmt, next_format - fmt);
244 if (tok == PTK_UNKNOWN) {
245 warn("unknown field name \"%.*s\"", (int)(next_format - fmt), fmt);
247 const char *field = query == NULL ? NULL : query_field_for_id(query, tok);
251 WRITE(field, m_strlen(field));
253 fmt = next_format + 1;
257 if (written > 0 && len > 0) {
258 dest[written] = '\0';