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13b685f9 PH |
1 | /************************************************* |
2 | * Exim - an Internet mail transport agent * | |
3 | *************************************************/ | |
4 | ||
3386088d | 5 | /* Copyright (c) University of Cambridge 1995 - 2015 */ |
13b685f9 PH |
6 | /* See the file NOTICE for conditions of use and distribution. */ |
7 | ||
8 | #include "../exim.h" | |
9 | #include "lf_functions.h" | |
13b685f9 | 10 | |
13b685f9 PH |
11 | #include <sqlite3.h> |
12 | ||
13 | ||
14 | /************************************************* | |
15 | * Open entry point * | |
16 | *************************************************/ | |
17 | ||
18 | /* See local README for interface description. */ | |
19 | ||
e6d225ae | 20 | static void * |
13b685f9 PH |
21 | sqlite_open(uschar *filename, uschar **errmsg) |
22 | { | |
23 | sqlite3 *db = NULL; | |
24 | int ret; | |
25 | ||
26 | ret = sqlite3_open((char *)filename, &db); | |
27 | if (ret != 0) | |
28 | { | |
29 | *errmsg = (void *)sqlite3_errmsg(db); | |
30 | debug_printf("Error opening database: %s\n", *errmsg); | |
31 | } | |
32 | ||
31480e42 | 33 | sqlite3_busy_timeout(db, 1000 * sqlite_lock_timeout); |
13b685f9 PH |
34 | return db; |
35 | } | |
36 | ||
37 | ||
38 | /************************************************* | |
39 | * Find entry point * | |
40 | *************************************************/ | |
41 | ||
42 | /* See local README for interface description. */ | |
43 | ||
44 | struct strbuf { | |
45 | uschar *string; | |
46 | int size; | |
47 | int len; | |
48 | }; | |
49 | ||
50 | static int sqlite_callback(void *arg, int argc, char **argv, char **azColName) | |
51 | { | |
52 | struct strbuf *res = arg; | |
53 | int i; | |
54 | ||
55 | /* For second and subsequent results, insert \n */ | |
56 | ||
57 | if (res->string != NULL) | |
58 | res->string = string_cat(res->string, &res->size, &res->len, US"\n", 1); | |
59 | ||
60 | if (argc > 1) | |
61 | { | |
62 | /* For multiple fields, include the field name too */ | |
63 | for (i = 0; i < argc; i++) | |
64 | { | |
65 | uschar *value = US((argv[i] != NULL)? argv[i]:"<NULL>"); | |
66 | res->string = lf_quote(US azColName[i], value, Ustrlen(value), res->string, | |
67 | &res->size, &res->len); | |
68 | } | |
69 | } | |
70 | ||
71 | else | |
72 | { | |
73 | res->string = string_append(res->string, &res->size, &res->len, 1, | |
74 | (argv[0] != NULL)? argv[0]:"<NULL>"); | |
75 | } | |
76 | ||
77 | res->string[res->len] = 0; | |
78 | return 0; | |
79 | } | |
80 | ||
81 | ||
e6d225ae | 82 | static int |
55414b25 | 83 | sqlite_find(void *handle, uschar *filename, const uschar *query, int length, |
14b3c5bc | 84 | uschar **result, uschar **errmsg, uint *do_cache) |
13b685f9 PH |
85 | { |
86 | int ret; | |
87 | struct strbuf res = { NULL, 0, 0 }; | |
88 | ||
89 | ret = sqlite3_exec(handle, (char *)query, sqlite_callback, &res, (char **)errmsg); | |
90 | if (ret != SQLITE_OK) | |
91 | { | |
92 | debug_printf("sqlite3_exec failed: %s\n", *errmsg); | |
93 | return FAIL; | |
94 | } | |
95 | ||
14b3c5bc | 96 | if (res.string == NULL) *do_cache = 0; |
13b685f9 PH |
97 | |
98 | *result = res.string; | |
99 | return OK; | |
100 | } | |
101 | ||
102 | ||
103 | ||
104 | /************************************************* | |
105 | * Close entry point * | |
106 | *************************************************/ | |
107 | ||
108 | /* See local README for interface description. */ | |
109 | ||
e6d225ae | 110 | static void sqlite_close(void *handle) |
13b685f9 PH |
111 | { |
112 | sqlite3_close(handle); | |
113 | } | |
114 | ||
115 | ||
116 | ||
117 | /************************************************* | |
118 | * Quote entry point * | |
119 | *************************************************/ | |
120 | ||
121 | /* From what I have found so far, the only character that needs to be quoted | |
122 | for sqlite is the single quote, and it is quoted by doubling. | |
123 | ||
124 | Arguments: | |
125 | s the string to be quoted | |
126 | opt additional option text or NULL if none | |
127 | ||
128 | Returns: the processed string or NULL for a bad option | |
129 | */ | |
130 | ||
e6d225ae | 131 | static uschar * |
13b685f9 PH |
132 | sqlite_quote(uschar *s, uschar *opt) |
133 | { | |
134 | register int c; | |
135 | int count = 0; | |
136 | uschar *t = s; | |
137 | uschar *quoted; | |
138 | ||
139 | if (opt != NULL) return NULL; /* No options recognized */ | |
140 | ||
141 | while ((c = *t++) != 0) if (c == '\'') count++; | |
142 | ||
143 | if (count == 0) return s; | |
144 | t = quoted = store_get(Ustrlen(s) + count + 1); | |
145 | ||
146 | while ((c = *s++) != 0) | |
147 | { | |
148 | if (c == '\'') *t++ = '\''; | |
149 | *t++ = c; | |
150 | } | |
151 | ||
152 | *t = 0; | |
153 | return quoted; | |
154 | } | |
155 | ||
6545de78 PP |
156 | |
157 | ||
158 | /************************************************* | |
159 | * Version reporting entry point * | |
160 | *************************************************/ | |
161 | ||
162 | /* See local README for interface description. */ | |
163 | ||
164 | #include "../version.h" | |
165 | ||
166 | void | |
167 | sqlite_version_report(FILE *f) | |
168 | { | |
169 | fprintf(f, "Library version: SQLite: Compile: %s\n" | |
170 | " Runtime: %s\n", | |
171 | SQLITE_VERSION, sqlite3_libversion()); | |
172 | #ifdef DYNLOOKUP | |
173 | fprintf(f, " Exim version %s\n", EXIM_VERSION_STR); | |
174 | #endif | |
175 | } | |
176 | ||
e6d225ae DW |
177 | static lookup_info _lookup_info = { |
178 | US"sqlite", /* lookup name */ | |
179 | lookup_absfilequery, /* query-style lookup, starts with file name */ | |
180 | sqlite_open, /* open function */ | |
181 | NULL, /* no check function */ | |
182 | sqlite_find, /* find function */ | |
183 | sqlite_close, /* close function */ | |
184 | NULL, /* no tidy function */ | |
6545de78 PP |
185 | sqlite_quote, /* quoting function */ |
186 | sqlite_version_report /* version reporting */ | |
e6d225ae DW |
187 | }; |
188 | ||
189 | #ifdef DYNLOOKUP | |
190 | #define sqlite_lookup_module_info _lookup_module_info | |
191 | #endif | |
192 | ||
193 | static lookup_info *_lookup_list[] = { &_lookup_info }; | |
194 | lookup_module_info sqlite_lookup_module_info = { LOOKUP_MODULE_INFO_MAGIC, _lookup_list, 1 }; | |
13b685f9 PH |
195 | |
196 | /* End of lookups/sqlite.c */ |