rpm: rpm2cpio.c Source File

rpm 4.12.0.1

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rpm2cpio.c
Go to the documentation of this file.
1 /* rpmarchive: spit out the main archive portion of a package */
2
3 #include "system.h"
4 const char *__progname;
5
6 #include <rpm/rpmlib.h> /* rpmReadPackageFile .. */
7 #include <rpm/rpmtag.h>
8 #include <rpm/rpmio.h>
9 #include <rpm/rpmpgp.h>
10
11 #include <rpm/rpmts.h>
12
13 #include "debug.h"
14
15 int main(int argc, char *argv[])
16 {
17 FD_t fdi, fdo;
18 Header h;
19 char * rpmio_flags = NULL;
20 int rc;
21 off_t payload_size;
22 FD_t gzdi;
23
24 setprogname(argv[0]); /* Retrofit glibc __progname */
25 rpmReadConfigFiles(NULL, NULL);
26 if (argc == 1)
27 fdi = fdDup(STDIN_FILENO);
28 else {
29 if (rstreq(argv[1], "-h") || rstreq(argv[1], "--help")) {
30 fprintf(stderr, "Usage: rpm2cpio file.rpm\n");
31 exit(EXIT_FAILURE);
32 }
33 fdi = Fopen(argv[1], "r.ufdio");
34 }
35
36 if (Ferror(fdi)) {
37 fprintf(stderr, "%s: %s: %s\n", argv[0],
38 (argc == 1 ? "<stdin>" : argv[1]), Fstrerror(fdi));
39 exit(EXIT_FAILURE);
40 }
41 fdo = fdDup(STDOUT_FILENO);
42
43 { rpmts ts = rpmtsCreate();
44 rpmVSFlags vsflags = 0;
45
46 /* XXX retain the ageless behavior of rpm2cpio */
47 vsflags |= _RPMVSF_NODIGESTS;
48 vsflags |= _RPMVSF_NOSIGNATURES;
49 vsflags |= RPMVSF_NOHDRCHK;
50 (void) rpmtsSetVSFlags(ts, vsflags);
51
52 rc = rpmReadPackageFile(ts, fdi, "rpm2cpio", &h);
53
54 ts = rpmtsFree(ts);
55 }
56
57 switch (rc) {
58 case RPMRC_OK:
59 case RPMRC_NOKEY:
60 case RPMRC_NOTTRUSTED:
61 break;
62 case RPMRC_NOTFOUND:
63 fprintf(stderr, _("argument is not an RPM package\n"));
64 exit(EXIT_FAILURE);
65 break;
66 case RPMRC_FAIL:
67 default:
68 fprintf(stderr, _("error reading header from package\n"));
69 exit(EXIT_FAILURE);
70 break;
71 }
72
73 /* Retrieve payload size and compression type. */
74 { const char *compr = headerGetString(h, RPMTAG_PAYLOADCOMPRESSOR);
75 rpmio_flags = rstrscat(NULL, "r.", compr ? compr : "gzip", NULL);
76 payload_size = headerGetNumber(h, RPMTAG_LONGARCHIVESIZE);
77 }
78
79 gzdi = Fdopen(fdi, rpmio_flags); /* XXX gzdi == fdi */
80 free(rpmio_flags);
81
82 if (gzdi == NULL) {
83 fprintf(stderr, _("cannot re-open payload: %s\n"), Fstrerror(gzdi));
84 exit(EXIT_FAILURE);
85 }
86
87 rc = (ufdCopy(gzdi, fdo) == payload_size) ? EXIT_SUCCESS : EXIT_FAILURE;
88
89 Fclose(fdo);
90
91 Fclose(gzdi); /* XXX gzdi == fdi */
92
93 return rc;
94 }
setprogname
#define setprogname(pn)
Definition: system.h:97
rpmReadPackageFile
rpmRC rpmReadPackageFile(rpmts ts, FD_t fd, const char *fn, Header *hdrp)
Return package header from file handle, verifying digests/signatures.
debug.h
rpmtsFree
rpmts rpmtsFree(rpmts ts)
Destroy transaction set, closing the database as well.
rpmts
struct rpmts_s * rpmts
The main types involved in transaction manipulation.
Definition: rpmtypes.h:63
_
#define _(Text)
Definition: system.h:110
rpmtsCreate
rpmts rpmtsCreate(void)
Create an empty transaction set.
RPMRC_NOKEY
Definition: rpmtypes.h:108
RPMRC_OK
Definition: rpmtypes.h:104
main
int main(int argc, char *argv[])
Definition: rpm2cpio.c:15
FD_t
struct _FD_s * FD_t
RPM IO file descriptor type.
Definition: rpmtypes.h:98
rpmReadConfigFiles
int rpmReadConfigFiles(const char *file, const char *target)
Read macro configuration file(s) for a target.
rstreq
static int rstreq(const char *s1, const char *s2)
Test for string equality.
Definition: rpmstring.h:113
headerGetNumber
uint64_t headerGetNumber(Header h, rpmTagVal tag)
rstrscat
char * rstrscat(char **dest, const char *arg,...) RPM_GNUC_NULL_TERMINATED
Concatenate multiple strings with dynamically (re)allocated memory.
Fdopen
FD_t Fdopen(FD_t ofd, const char *fmode)
Header
struct headerToken_s * Header
RPM header and data retrieval types.
Definition: rpmtypes.h:24
ufdCopy
off_t ufdCopy(FD_t sfd, FD_t tfd)
rpmVSFlags
rpmFlags rpmVSFlags
Definition: rpmts.h:110
RPMTAG_PAYLOADCOMPRESSOR
Definition: rpmtag.h:189
rpmtsSetVSFlags
rpmVSFlags rpmtsSetVSFlags(rpmts ts, rpmVSFlags vsflags)
Set verify signatures flag(s).
_RPMVSF_NOSIGNATURES
#define _RPMVSF_NOSIGNATURES
Definition: rpmts.h:118
Fstrerror
const char * Fstrerror(FD_t fd)
strerror(3) clone.
RPMRC_FAIL
Definition: rpmtypes.h:106
fdDup
FD_t fdDup(int fdno)
system.h
Fopen
FD_t Fopen(const char *path, const char *fmode)
fopen(3) clone.
__progname
#define __progname
Definition: system.h:96
_RPMVSF_NODIGESTS
#define _RPMVSF_NODIGESTS
Definition: rpmts.h:112
RPMRC_NOTFOUND
Definition: rpmtypes.h:105
RPMVSF_NOHDRCHK
Definition: rpmts.h:95
headerGetString
const char * headerGetString(Header h, rpmTagVal tag)
Return a simple string tag from header.
RPMRC_NOTTRUSTED
Definition: rpmtypes.h:107
Ferror
int Ferror(FD_t fd)
ferror(3) clone.
RPMTAG_LONGARCHIVESIZE
Definition: rpmtag.h:59
Fclose
int Fclose(FD_t fd)
fclose(3) clone.