Bug Summary

File:lib/rpmtd.c
Warning:line 264, column 2
Value stored to 'errmsg' is never read

Annotated Source Code

1#include "system.h"
2
3#include <rpm/rpmtd.h>
4#include <rpm/rpmstring.h>
5#include <rpm/rpmpgp.h>
6#include <rpm/rpmstrpool.h>
7#include "lib/misc.h" /* format function prototypes */
8
9#include "debug.h"
10
11rpmtd rpmtdNew(void)
12{
13 rpmtd td = xmalloc(sizeof(*td))rmalloc((sizeof(*td)));
14 rpmtdReset(td);
15 return td;
16}
17
18rpmtd rpmtdFree(rpmtd td)
19{
20 /* permit free on NULL td */
21 if (td != NULL((void*)0)) {
22 rpmtdFreeData(td);
23 free(td);
24 }
25 return NULL((void*)0);
26}
27
28void rpmtdReset(rpmtd td)
29{
30 if (td) {
31 memset(td, 0, sizeof(*td));
32 td->ix = -1;
33 }
34}
35
36void rpmtdFreeData(rpmtd td)
37{
38 if (td && td->data && td->flags & RPMTD_ALLOCED) {
39 if (td->flags & RPMTD_PTR_ALLOCED) {
40 char **data = td->data;
41 for (int i = 0; i < td->count; i++) {
42 free(data[i]);
43 }
44 }
45 free(td->data);
46 }
47 rpmtdReset(td);
48}
49
50rpm_count_t rpmtdCount(rpmtd td)
51{
52 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 52, __extension__ __PRETTY_FUNCTION__); }));
53 /* fix up for binary type abusing count as data length */
54 return (td->type == RPM_BIN_TYPE) ? 1 : td->count;
55}
56
57rpm_count_t rpmtdSize(rpmtd td)
58{
59 return (td != NULL((void*)0)) ? td->size : 0;
60}
61
62rpmTagVal rpmtdTag(rpmtd td)
63{
64 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 64, __extension__ __PRETTY_FUNCTION__); }));
65 return td->tag;
66}
67
68rpmTagType rpmtdType(rpmtd td)
69{
70 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 70, __extension__ __PRETTY_FUNCTION__); }));
71 return td->type;
72}
73
74rpmTagClass rpmtdClass(rpmtd td)
75{
76 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 76, __extension__ __PRETTY_FUNCTION__); }));
77 return rpmTagTypeGetClass(td->type);
78}
79
80rpmtdFlags rpmtdGetFlags(rpmtd td)
81{
82 return (td != NULL((void*)0)) ? td->flags : 0;
83}
84
85int rpmtdGetIndex(rpmtd td)
86{
87 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 87, __extension__ __PRETTY_FUNCTION__); }));
88 return td->ix;
89}
90
91int rpmtdSetIndex(rpmtd td, int index)
92{
93 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 93, __extension__ __PRETTY_FUNCTION__); }));
94
95 if (index < 0 || index >= rpmtdCount(td)) {
96 return -1;
97 }
98 td->ix = index;
99 return td->ix;
100}
101
102int rpmtdInit(rpmtd td)
103{
104 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 104, __extension__ __PRETTY_FUNCTION__); }));
105
106 /* XXX check that this is an array type? */
107 td->ix = -1;
108 return 0;
109}
110
111int rpmtdNext(rpmtd td)
112{
113 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 113, __extension__ __PRETTY_FUNCTION__); }));
114
115 int i = -1;
116
117 if (++td->ix >= 0) {
118 if (td->ix < rpmtdCount(td)) {
119 i = td->ix;
120 } else {
121 td->ix = i;
122 }
123 }
124 return i;
125}
126
127uint32_t *rpmtdNextUint32(rpmtd td)
128{
129 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 129, __extension__ __PRETTY_FUNCTION__); }));
130 uint32_t *res = NULL((void*)0);
131 if (rpmtdNext(td) >= 0) {
132 res = rpmtdGetUint32(td);
133 }
134 return res;
135}
136
137uint64_t *rpmtdNextUint64(rpmtd td)
138{
139 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 139, __extension__ __PRETTY_FUNCTION__); }));
140 uint64_t *res = NULL((void*)0);
141 if (rpmtdNext(td) >= 0) {
142 res = rpmtdGetUint64(td);
143 }
144 return res;
145}
146
147const char *rpmtdNextString(rpmtd td)
148{
149 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 149, __extension__ __PRETTY_FUNCTION__); }));
150 const char *res = NULL((void*)0);
151 if (rpmtdNext(td) >= 0) {
152 res = rpmtdGetString(td);
153 }
154 return res;
155}
156
157char * rpmtdGetChar(rpmtd td)
158{
159 char *res = NULL((void*)0);
160
161 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 161, __extension__ __PRETTY_FUNCTION__); }));
162
163 if (td->type == RPM_CHAR_TYPE) {
164 int ix = (td->ix >= 0 ? td->ix : 0);
165 res = (char *) td->data + ix;
166 }
167 return res;
168}
169uint16_t * rpmtdGetUint16(rpmtd td)
170{
171 uint16_t *res = NULL((void*)0);
172
173 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 173, __extension__ __PRETTY_FUNCTION__); }));
174
175 if (td->type == RPM_INT16_TYPE) {
176 int ix = (td->ix >= 0 ? td->ix : 0);
177 res = (uint16_t *) td->data + ix;
178 }
179 return res;
180}
181
182uint32_t * rpmtdGetUint32(rpmtd td)
183{
184 uint32_t *res = NULL((void*)0);
185
186 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 186, __extension__ __PRETTY_FUNCTION__); }));
187
188 if (td->type == RPM_INT32_TYPE) {
189 int ix = (td->ix >= 0 ? td->ix : 0);
190 res = (uint32_t *) td->data + ix;
191 }
192 return res;
193}
194
195uint64_t * rpmtdGetUint64(rpmtd td)
196{
197 uint64_t *res = NULL((void*)0);
198
199 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 199, __extension__ __PRETTY_FUNCTION__); }));
200
201 if (td->type == RPM_INT64_TYPE) {
202 int ix = (td->ix >= 0 ? td->ix : 0);
203 res = (uint64_t *) td->data + ix;
204 }
205 return res;
206}
207
208const char * rpmtdGetString(rpmtd td)
209{
210 const char *str = NULL((void*)0);
211
212 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 212, __extension__ __PRETTY_FUNCTION__); }));
213
214 if (td->type == RPM_STRING_TYPE) {
215 str = (const char *) td->data;
216 } else if (td->type == RPM_STRING_ARRAY_TYPE ||
217 td->type == RPM_I18NSTRING_TYPE) {
218 /* XXX TODO: check for array bounds */
219 int ix = (td->ix >= 0 ? td->ix : 0);
220 str = *((const char**) td->data + ix);
221 }
222 return str;
223}
224
225uint64_t rpmtdGetNumber(rpmtd td)
226{
227 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 227, __extension__ __PRETTY_FUNCTION__); }));
228 uint64_t val = 0;
229 int ix = (td->ix >= 0 ? td->ix : 0);
230
231 switch (td->type) {
232 case RPM_INT64_TYPE:
233 val = *((uint64_t *) td->data + ix);
234 break;
235 case RPM_INT32_TYPE:
236 val = *((uint32_t *) td->data + ix);
237 break;
238 case RPM_INT16_TYPE:
239 val = *((uint16_t *) td->data + ix);
240 break;
241 case RPM_INT8_TYPE:
242 case RPM_CHAR_TYPE:
243 val = *((uint8_t *) td->data + ix);
244 break;
245 default:
246 break;
247 }
248 return val;
249}
250
251char *rpmtdFormat(rpmtd td, rpmtdFormats fmt, const char *errmsg)
252{
253 headerFmt ext = rpmHeaderFormatByValue(fmt);
254 const char *err = NULL((void*)0);
255 char *str = NULL((void*)0);
256
257 if (ext) {
258 str = rpmHeaderFormatCall(ext, td);
259 } else {
260 err = _("Unknown format")dcgettext ("rpm", "Unknown format", 5);
261 }
262
263 if (err && errmsg) {
264 errmsg = err;
Value stored to 'errmsg' is never read
265 }
266
267 return str;
268}
269
270int rpmtdSetTag(rpmtd td, rpmTagVal tag)
271{
272 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 272, __extension__ __PRETTY_FUNCTION__); }));
273 rpmTagType newtype = rpmTagGetTagType(tag);
274 int rc = 0;
275
276 /*
277 * Sanity checks:
278 * - is the new tag valid at all
279 * - if changing tag of non-empty container, require matching type
280 */
281 if (newtype == RPM_NULL_TYPE)
282 goto exit;
283
284 if (td->data || td->count > 0) {
285 if (rpmTagGetTagType(td->tag) != rpmTagGetTagType(tag)) {
286 goto exit;
287 }
288 }
289
290 td->tag = tag;
291 td->type = newtype;
292 rc = 1;
293
294exit:
295 return rc;
296}
297
298static inline int rpmtdSet(rpmtd td, rpmTagVal tag, rpmTagType type,
299 rpm_constdata_t data, rpm_count_t count)
300{
301 rpmtdReset(td);
302 td->tag = tag;
303 td->type = type;
304 td->count = count;
305 /*
306 * Discards const, but we won't touch the data (even rpmtdFreeData()
307 * wont free it as allocation flags aren't set) so it's "ok".
308 * XXX: Should there be a separate RPMTD_FOO flag for "user data"?
309 */
310 td->data = (void *) data;
311 return 1;
312}
313
314int rpmtdFromUint8(rpmtd td, rpmTagVal tag, uint8_t *data, rpm_count_t count)
315{
316 rpmTagType type = rpmTagGetTagType(tag);
317 rpmTagReturnType retype = rpmTagGetReturnType(tag);
318
319 if (count < 1)
320 return 0;
321
322 /*
323 * BIN type is really just an uint8_t array internally, it's just
324 * treated specially otherwise.
325 */
326 switch (type) {
327 case RPM_CHAR_TYPE:
328 case RPM_INT8_TYPE:
329 if (retype != RPM_ARRAY_RETURN_TYPE && count > 1)
330 return 0;
331 /* fallthrough */
332 case RPM_BIN_TYPE:
333 break;
334 default:
335 return 0;
336 }
337
338 return rpmtdSet(td, tag, type, data, count);
339}
340
341int rpmtdFromUint16(rpmtd td, rpmTagVal tag, uint16_t *data, rpm_count_t count)
342{
343 rpmTagType type = rpmTagGetTagType(tag);
344 rpmTagReturnType retype = rpmTagGetReturnType(tag);
345 if (type != RPM_INT16_TYPE || count < 1)
346 return 0;
347 if (retype != RPM_ARRAY_RETURN_TYPE && count > 1)
348 return 0;
349
350 return rpmtdSet(td, tag, type, data, count);
351}
352
353int rpmtdFromUint32(rpmtd td, rpmTagVal tag, uint32_t *data, rpm_count_t count)
354{
355 rpmTagType type = rpmTagGetTagType(tag);
356 rpmTagReturnType retype = rpmTagGetReturnType(tag);
357 if (type != RPM_INT32_TYPE || count < 1)
358 return 0;
359 if (retype != RPM_ARRAY_RETURN_TYPE && count > 1)
360 return 0;
361
362 return rpmtdSet(td, tag, type, data, count);
363}
364
365int rpmtdFromUint64(rpmtd td, rpmTagVal tag, uint64_t *data, rpm_count_t count)
366{
367 rpmTagType type = rpmTagGetTagType(tag);
368 rpmTagReturnType retype = rpmTagGetReturnType(tag);
369 if (type != RPM_INT64_TYPE || count < 1)
370 return 0;
371 if (retype != RPM_ARRAY_RETURN_TYPE && count > 1)
372 return 0;
373
374 return rpmtdSet(td, tag, type, data, count);
375}
376
377int rpmtdFromString(rpmtd td, rpmTagVal tag, const char *data)
378{
379 rpmTagType type = rpmTagGetTagType(tag);
380 int rc = 0;
381
382 if (type == RPM_STRING_TYPE) {
383 rc = rpmtdSet(td, tag, type, data, 1);
384 } else if (type == RPM_STRING_ARRAY_TYPE) {
385 rc = rpmtdSet(td, tag, type, &data, 1);
386 }
387
388 return rc;
389}
390
391int rpmtdFromStringArray(rpmtd td, rpmTagVal tag, const char **data, rpm_count_t count)
392{
393 rpmTagType type = rpmTagGetTagType(tag);
394 if (type != RPM_STRING_ARRAY_TYPE || count < 1)
395 return 0;
396 if (type == RPM_STRING_TYPE && count != 1)
397 return 0;
398
399 return rpmtdSet(td, tag, type, data, count);
400}
401
402int rpmtdFromArgv(rpmtd td, rpmTagVal tag, ARGV_t argv)
403{
404 int count = argvCount(argv);
405 rpmTagType type = rpmTagGetTagType(tag);
406
407 if (type != RPM_STRING_ARRAY_TYPE || count < 1)
408 return 0;
409
410 return rpmtdSet(td, tag, type, argv, count);
411}
412
413int rpmtdFromArgi(rpmtd td, rpmTagVal tag, ARGI_t argi)
414{
415 int count = argiCount(argi);
416 rpmTagType type = rpmTagGetTagType(tag);
417 rpmTagReturnType retype = rpmTagGetReturnType(tag);
418
419 if (type != RPM_INT32_TYPE || retype != RPM_ARRAY_RETURN_TYPE || count < 1)
420 return 0;
421
422 return rpmtdSet(td, tag, type, argiData(argi), count);
423}
424
425rpmtd rpmtdDup(rpmtd td)
426{
427 rpmtd newtd = NULL((void*)0);
428 char **data = NULL((void*)0);
429 int i;
430
431 assert(td != NULL)((void) sizeof ((td != ((void*)0)) == 0), __extension__ ({ if
(td != ((void*)0)) ; else __assert_fail ("td != NULL", "rpmtd.c"
, 431, __extension__ __PRETTY_FUNCTION__); }));
432 /* TODO: permit other types too */
433 if (td->type != RPM_STRING_ARRAY_TYPE && td->type != RPM_I18NSTRING_TYPE) {
434 return NULL((void*)0);
435 }
436
437 /* deep-copy container and data, drop immutable flag */
438 newtd = rpmtdNew();
439 memcpy(newtd, td, sizeof(*td));
440 newtd->flags &= ~(RPMTD_IMMUTABLE);
441
442 newtd->flags |= (RPMTD_ALLOCED | RPMTD_PTR_ALLOCED);
443 newtd->data = data = xmalloc(td->count * sizeof(*data))rmalloc((td->count * sizeof(*data)));
444 while ((i = rpmtdNext(td)) >= 0) {
445 data[i] = xstrdup(rpmtdGetString(td))rstrdup((rpmtdGetString(td)));
446 }
447
448 return newtd;
449}
450
451rpmsid * rpmtdToPool(rpmtd td, rpmstrPool pool)
452{
453 rpmsid *sids = NULL((void*)0);
454
455 if (pool && td) {
456 const char **strings = td->data;
457 switch (td->type) {
458 case RPM_STRING_ARRAY_TYPE:
459 case RPM_I18NSTRING_TYPE:
460 sids = xmalloc(td->count * sizeof(*sids))rmalloc((td->count * sizeof(*sids)));
461 for (rpm_count_t i = 0; i < td->count; i++)
462 sids[i] = rpmstrPoolId(pool, strings[i], 1);
463 break;
464 }
465 }
466 return sids;
467}