00001
00010 #include "system.h"
00011 #include <rpmlib.h>
00012
00013 #include "fsm.h"
00014 #include "rpmerr.h"
00015 #include "debug.h"
00016
00017
00018
00019
00020 extern int _fsm_debug;
00021
00022
00031 static int strntoul(const char *str, char **endptr, int base, int num)
00032
00033 {
00034 char * buf, * end;
00035 unsigned long ret;
00036
00037 buf = alloca(num + 1);
00038 strncpy(buf, str, num);
00039 buf[num] = '\0';
00040
00041 ret = strtoul(buf, &end, base);
00042 if (*end != '\0')
00043 *endptr = ((char *)str) + (end - buf);
00044 else
00045 *endptr = ((char *)str) + strlen(buf);
00046
00047 return ret;
00048 }
00049
00050 #define GET_NUM_FIELD(phys, log) \
00051 log = strntoul(phys, &end, 16, sizeof(phys)); \
00052 if ( (end - phys) != sizeof(phys) ) return CPIOERR_BAD_HEADER;
00053 #define SET_NUM_FIELD(phys, val, space) \
00054 sprintf(space, "%8.8lx", (unsigned long) (val)); \
00055 memcpy(phys, space, 8);
00056
00057 int cpioTrailerWrite(FSM_t fsm)
00058 {
00059 struct cpioCrcPhysicalHeader * hdr =
00060 (struct cpioCrcPhysicalHeader *)fsm->rdbuf;
00061 int rc;
00062
00063 memset(hdr, '0', PHYS_HDR_SIZE);
00064 memcpy(hdr->magic, CPIO_NEWC_MAGIC, sizeof(hdr->magic));
00065 memcpy(hdr->nlink, "00000001", 8);
00066 memcpy(hdr->namesize, "0000000b", 8);
00067 memcpy(fsm->rdbuf + PHYS_HDR_SIZE, CPIO_TRAILER, sizeof(CPIO_TRAILER));
00068
00069
00070 fsm->rdnb = PHYS_HDR_SIZE + sizeof(CPIO_TRAILER);
00071 rc = fsmStage(fsm, FSM_DWRITE);
00072
00073
00074
00075
00076
00077 if (!rc)
00078 rc = fsmStage(fsm, FSM_PAD);
00079
00080 return rc;
00081 }
00082
00083 int cpioHeaderWrite(FSM_t fsm, struct stat * st)
00084 {
00085 struct cpioCrcPhysicalHeader * hdr = (struct cpioCrcPhysicalHeader *)fsm->rdbuf;
00086 char field[64];
00087 size_t len;
00088 dev_t dev;
00089 int rc = 0;
00090
00091 memcpy(hdr->magic, CPIO_NEWC_MAGIC, sizeof(hdr->magic));
00092 SET_NUM_FIELD(hdr->inode, st->st_ino, field);
00093 SET_NUM_FIELD(hdr->mode, st->st_mode, field);
00094 SET_NUM_FIELD(hdr->uid, st->st_uid, field);
00095 SET_NUM_FIELD(hdr->gid, st->st_gid, field);
00096 SET_NUM_FIELD(hdr->nlink, st->st_nlink, field);
00097 SET_NUM_FIELD(hdr->mtime, st->st_mtime, field);
00098 SET_NUM_FIELD(hdr->filesize, st->st_size, field);
00099
00100 dev = major((unsigned)st->st_dev); SET_NUM_FIELD(hdr->devMajor, dev, field);
00101 dev = minor((unsigned)st->st_dev); SET_NUM_FIELD(hdr->devMinor, dev, field);
00102 dev = major((unsigned)st->st_rdev); SET_NUM_FIELD(hdr->rdevMajor, dev, field);
00103 dev = minor((unsigned)st->st_rdev); SET_NUM_FIELD(hdr->rdevMinor, dev, field);
00104
00105 len = strlen(fsm->path) + 1; SET_NUM_FIELD(hdr->namesize, len, field);
00106 memcpy(hdr->checksum, "00000000", 8);
00107 memcpy(fsm->rdbuf + PHYS_HDR_SIZE, fsm->path, len);
00108
00109
00110 fsm->rdnb = PHYS_HDR_SIZE + len;
00111 rc = fsmStage(fsm, FSM_DWRITE);
00112 if (!rc && fsm->rdnb != fsm->wrnb)
00113 rc = CPIOERR_WRITE_FAILED;
00114 if (!rc)
00115 rc = fsmStage(fsm, FSM_PAD);
00116 return rc;
00117 }
00118
00119 int cpioHeaderRead(FSM_t fsm, struct stat * st)
00120
00121 {
00122 struct cpioCrcPhysicalHeader hdr;
00123 int nameSize;
00124 char * end;
00125 int major, minor;
00126 int rc = 0;
00127
00128 fsm->wrlen = PHYS_HDR_SIZE;
00129 rc = fsmStage(fsm, FSM_DREAD);
00130 if (!rc && fsm->rdnb != fsm->wrlen)
00131 rc = CPIOERR_READ_FAILED;
00132 if (rc) return rc;
00133 memcpy(&hdr, fsm->wrbuf, fsm->rdnb);
00134
00135 if (strncmp(CPIO_CRC_MAGIC, hdr.magic, sizeof(CPIO_CRC_MAGIC)-1) &&
00136 strncmp(CPIO_NEWC_MAGIC, hdr.magic, sizeof(CPIO_NEWC_MAGIC)-1))
00137 return CPIOERR_BAD_MAGIC;
00138
00139 GET_NUM_FIELD(hdr.inode, st->st_ino);
00140 GET_NUM_FIELD(hdr.mode, st->st_mode);
00141 GET_NUM_FIELD(hdr.uid, st->st_uid);
00142 GET_NUM_FIELD(hdr.gid, st->st_gid);
00143 GET_NUM_FIELD(hdr.nlink, st->st_nlink);
00144 GET_NUM_FIELD(hdr.mtime, st->st_mtime);
00145 GET_NUM_FIELD(hdr.filesize, st->st_size);
00146
00147 GET_NUM_FIELD(hdr.devMajor, major);
00148 GET_NUM_FIELD(hdr.devMinor, minor);
00149 st->st_dev = makedev(major, minor) ;
00150
00151 GET_NUM_FIELD(hdr.rdevMajor, major);
00152 GET_NUM_FIELD(hdr.rdevMinor, minor);
00153 st->st_rdev = makedev(major, minor) ;
00154
00155 GET_NUM_FIELD(hdr.namesize, nameSize);
00156 if (nameSize >= fsm->wrsize)
00157 return CPIOERR_BAD_HEADER;
00158
00159 { char * t = xmalloc(nameSize + 1);
00160 fsm->wrlen = nameSize;
00161 rc = fsmStage(fsm, FSM_DREAD);
00162 if (!rc && fsm->rdnb != fsm->wrlen)
00163 rc = CPIOERR_BAD_HEADER;
00164 if (rc) {
00165 t = _free(t);
00166 fsm->path = NULL;
00167 return rc;
00168 }
00169 memcpy(t, fsm->wrbuf, fsm->rdnb);
00170 t[nameSize] = '\0';
00171 fsm->path = t;
00172 }
00173
00174 return 0;
00175 }
00176
00177 const char *const cpioStrerror(int rc)
00178 {
00179 static char msg[256];
00180 char *s;
00181 int l, myerrno = errno;
00182
00183 strcpy(msg, "cpio: ");
00184 switch (rc) {
00185 default:
00186 s = msg + strlen(msg);
00187 sprintf(s, _("(error 0x%x)"), (unsigned)rc);
00188 s = NULL;
00189 break;
00190 case CPIOERR_BAD_MAGIC: s = _("Bad magic"); break;
00191 case CPIOERR_BAD_HEADER: s = _("Bad/unreadable header");break;
00192
00193 case CPIOERR_OPEN_FAILED: s = "open"; break;
00194 case CPIOERR_CHMOD_FAILED: s = "chmod"; break;
00195 case CPIOERR_CHOWN_FAILED: s = "chown"; break;
00196 case CPIOERR_WRITE_FAILED: s = "write"; break;
00197 case CPIOERR_UTIME_FAILED: s = "utime"; break;
00198 case CPIOERR_UNLINK_FAILED: s = "unlink"; break;
00199 case CPIOERR_RENAME_FAILED: s = "rename"; break;
00200 case CPIOERR_SYMLINK_FAILED: s = "symlink"; break;
00201 case CPIOERR_STAT_FAILED: s = "stat"; break;
00202 case CPIOERR_LSTAT_FAILED: s = "lstat"; break;
00203 case CPIOERR_MKDIR_FAILED: s = "mkdir"; break;
00204 case CPIOERR_RMDIR_FAILED: s = "rmdir"; break;
00205 case CPIOERR_MKNOD_FAILED: s = "mknod"; break;
00206 case CPIOERR_MKFIFO_FAILED: s = "mkfifo"; break;
00207 case CPIOERR_LINK_FAILED: s = "link"; break;
00208 case CPIOERR_READLINK_FAILED: s = "readlink"; break;
00209 case CPIOERR_READ_FAILED: s = "read"; break;
00210 case CPIOERR_COPY_FAILED: s = "copy"; break;
00211
00212 case CPIOERR_HDR_SIZE: s = _("Header size too big"); break;
00213 case CPIOERR_UNKNOWN_FILETYPE: s = _("Unknown file type"); break;
00214 case CPIOERR_MISSING_HARDLINK: s = _("Missing hard link(s)"); break;
00215 case CPIOERR_MD5SUM_MISMATCH: s = _("MD5 sum mismatch"); break;
00216 case CPIOERR_INTERNAL: s = _("Internal error"); break;
00217 case CPIOERR_UNMAPPED_FILE: s = _("Archive file not in header"); break;
00218 }
00219
00220 l = sizeof(msg) - strlen(msg) - 1;
00221 if (s != NULL) {
00222 if (l > 0) strncat(msg, s, l);
00223 l -= strlen(s);
00224 }
00225 if ((rc & CPIOERR_CHECK_ERRNO) && myerrno) {
00226 s = _(" failed - ");
00227 if (l > 0) strncat(msg, s, l);
00228 l -= strlen(s);
00229 if (l > 0) strncat(msg, strerror(myerrno), l);
00230 }
00231 return msg;
00232 }