+++ /dev/null
-/*
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-
- .volinfo file handling, command line utilities
- copyright Bjoern Fernhomberg, 2004
-*/
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif /* HAVE_CONFIG_H */
-
-#include <unistd.h>
-#include <sys/types.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <string.h>
-#include <sys/param.h>
-
-#include <atalk/adouble.h>
-#include <atalk/util.h>
-#include <atalk/logger.h>
-#include <atalk/volinfo.h>
-#include <atalk/volume.h>
-#include <atalk/compat.h>
-#ifdef CNID_DB
-#include <atalk/cnid.h>
-#endif /* CNID_DB*/
-
-static const vol_opt_name_t vol_opt_names[] = {
- {AFPVOL_RO, "READONLY"}, /* read-only volume */
- {AFPVOL_NOHEX, "NOHEX"}, /* don't do :hex translation */
- {AFPVOL_USEDOTS, "USEDOTS"}, /* use real dots */
- {AFPVOL_NOSTAT, "NOSTAT"}, /* advertise the volume even if we can't stat() it
- * maybe because it will be mounted later in preexec */
- {AFPVOL_UNIX_PRIV, "UNIXPRIV"}, /* support unix privileges */
- {AFPVOL_NODEV, "NODEV"}, /* always use 0 for device number in cnid calls */
- {AFPVOL_CASEINSEN, "CASEINSENSITIVE"}, /* volume is case insensitive */
- {AFPVOL_EILSEQ, "ILLEGALSEQ"}, /* encode illegal sequence */
- {AFPVOL_INV_DOTS, "INVISIBLEDOTS"},
- {AFPVOL_ACLS, "ACLS"}, /* Vol supports ACLs */
- {AFPVOL_TM, "TM"}, /* Set "kSupportsTMLockSteal" is volume attributes */
- {0, NULL}
-};
-
-static const vol_opt_name_t vol_opt_casefold[] = {
- {AFPVOL_MTOUUPPER, "MTOULOWER"},
- {AFPVOL_MTOULOWER, "MTOULOWER"},
- {AFPVOL_UTOMUPPER, "UTOMUPPER"},
- {AFPVOL_UTOMLOWER, "UTOMLOWER"},
- {0, NULL}
-};
-
-typedef struct {
- const char *name;
- int type;
-} info_option_t;
-
-#define MAC_CHARSET 0
-#define VOL_CHARSET 1
-#define ADOUBLE_VER 2
-#define CNIDBACKEND 3
-#define CNIDDBDHOST 4
-#define CNIDDBDPORT 5
-#define CNID_DBPATH 6
-#define VOLUME_OPTS 7
-#define VOLCASEFOLD 8
-#define EXTATTRTYPE 9
-
-static const info_option_t info_options[] = {
- {"MAC_CHARSET", MAC_CHARSET},
- {"VOL_CHARSET", VOL_CHARSET},
- {"ADOUBLE_VER", ADOUBLE_VER},
- {"CNIDBACKEND", CNIDBACKEND},
- {"CNIDDBDHOST", CNIDDBDHOST},
- {"CNIDDBDPORT", CNIDDBDPORT},
- {"CNID_DBPATH", CNID_DBPATH},
- {"VOLUME_OPTS", VOLUME_OPTS},
- {"VOLCASEFOLD", VOLCASEFOLD},
- {"EXTATTRTYPE", EXTATTRTYPE},
- {NULL, 0}
-};
-
-static char* find_in_path( char *path, char *subdir, size_t maxlen)
-{
- char *pos;
- struct stat st;
-
- strlcat(path, subdir, maxlen);
- pos = strrchr(path, '/');
-
- while ( stat(path, &st) != 0) {
- path[pos-path]=0;
- if ((pos = strrchr(path, '/'))) {
- path[pos-path]=0;
- strlcat(path, subdir, maxlen);
- }
- else {
- return NULL;
- }
- }
-
- path[pos-path] = '/';
- path[pos-path+1] = 0;
-
- return path;
-}
-
-static char * make_path_absolute(char *path, size_t bufsize)
-{
- struct stat st;
- char savecwd[MAXPATHLEN];
- char abspath[MAXPATHLEN];
- char *p;
-
- strlcpy(abspath, path, sizeof(abspath));
-
- /* we might be called from `ad cp ...` with non existing target */
- if (stat(abspath, &st) != 0) {
- if (errno != ENOENT)
- return NULL;
-
- if (NULL == (p = strrchr(abspath, '/')) )
- /* single component `ad cp SOURCEFILE TARGETFILE`, use "." instead */
- strcpy(abspath, ".");
- else
- /* try without the last path element */
- *p = '\0';
-
- if (stat(abspath, &st) != 0) {
- return NULL;
- }
- }
-
- if (S_ISREG(st.st_mode)) {
- /* single file copy SOURCE */
- if (NULL == (p = strrchr(abspath, '/')) )
- /* no path, use "." instead */
- strcpy(abspath, ".");
- else
- /* try without the last path element */
- *p = '\0';
- }
-
- if (!getcwd(savecwd, sizeof(savecwd)) || chdir(abspath) < 0)
- return NULL;
-
- if (!getcwd(abspath, sizeof(abspath)) || chdir (savecwd) < 0)
- return NULL;
-
- if (strlen(abspath) > bufsize)
- return NULL;
-
- strlcpy(path, abspath, bufsize);
- return path;
-}
-
-static char * find_volumeroot(char *path, size_t maxlen)
-{
- char *volume = make_path_absolute(path, maxlen);
-
- if (volume == NULL)
- return NULL;
-
- if (NULL == (find_in_path(volume, "/.AppleDesktop", maxlen)) )
- return NULL;
-
- return volume;
-}
-
-int vol_load_charsets( struct volinfo *vol)
-{
- if ( (charset_t) -1 == ( vol->v_maccharset = add_charset(vol->v_maccodepage)) ) {
- fprintf( stderr, "Setting codepage %s as Mac codepage failed", vol->v_maccodepage);
- return (-1);
- }
-
- if ( (charset_t) -1 == ( vol->v_volcharset = add_charset(vol->v_volcodepage)) ) {
- fprintf( stderr, "Setting codepage %s as volume codepage failed", vol->v_volcodepage);
- return (-1);
- }
-
- return 0;
-}
-
-static int parse_options (char *buf, int *flags, const vol_opt_name_t *options)
-{
- char *p, *q;
- const vol_opt_name_t *op;
-
- q = p = buf;
-
- while ( *p != '\0') {
- if (*p == ' ') {
- *p = '\0';
- op = options;
- for (;op->name; op++) {
- if ( !strcmp(op->name, q )) {
- *flags |= op->option;
- break;
- }
- }
- q = p+1;
- }
- p++;
- }
-
- return 0;
-}
-
-
-
-static int parseline ( char *buf, struct volinfo *vol)
-{
- char *value;
- size_t len;
- int option=-1;
- const info_option_t *p = &info_options[0];
-
- if (NULL == ( value = strchr(buf, ':')) )
- return 1;
-
- *value = '\0';
- value++;
-
- if ( 0 == (len = strlen(value)) )
- return 0;
-
- if (value[len-1] == '\n')
- value[len-1] = '\0';
-
- for (;p->name; p++) {
- if ( !strcmp(p->name, buf )) {
- option=p->type;
- break;
- }
- }
-
- switch (option) {
- case MAC_CHARSET:
- if ((vol->v_maccodepage = strdup(value)) == NULL) {
- fprintf (stderr, "strdup: %s", strerror(errno));
- return -1;
- }
- break;
- case VOL_CHARSET:
- if ((vol->v_volcodepage = strdup(value)) == NULL) {
- fprintf (stderr, "strdup: %s", strerror(errno));
- return -1;
- }
- break;
- case CNIDBACKEND:
- if ((vol->v_cnidscheme = strdup(value)) == NULL) {
- fprintf (stderr, "strdup: %s", strerror(errno));
- return -1;
- }
- break;
- case CNIDDBDHOST:
- if ((vol->v_dbd_host = strdup(value)) == NULL) {
- fprintf (stderr, "strdup: %s", strerror(errno));
- return -1;
- }
- break;
- case CNIDDBDPORT:
- if ((vol->v_dbd_port = strdup(value)) == NULL) {
- fprintf (stderr, "strdup: %s", strerror(errno));
- return -1;
- }
- break;
- case CNID_DBPATH:
- if ((vol->v_dbpath = malloc(MAXPATHLEN+1)) == NULL)
- return -1;
- strcpy(vol->v_dbpath, value);
- break;
- case ADOUBLE_VER:
- if (strcasecmp(value, "v2") == 0) {
- vol->ad_path = ad_path;
- vol->v_adouble = AD_VERSION2;
- } else if (strcasecmp(value, "ea") == 0) {
- vol->ad_path = ad_path_ea;
- vol->v_adouble = AD_VERSION_EA;
- } else {
-
- fprintf (stderr, "unknown adouble version: %s, %s", buf, value);
- return -1;
- }
- break;
- case VOLUME_OPTS:
- parse_options(value, &vol->v_flags, &vol_opt_names[0]);
- break;
- case VOLCASEFOLD:
- parse_options(value, &vol->v_casefold, &vol_opt_casefold[0]);
- break;
- case EXTATTRTYPE:
- if (strcasecmp(value, "AFPVOL_EA_AD") == 0)
- vol->v_vfs_ea = AFPVOL_EA_AD;
- else if (strcasecmp(value, "AFPVOL_EA_SYS") == 0)
- vol->v_vfs_ea = AFPVOL_EA_SYS;
- break;
- default:
- fprintf (stderr, "unknown volume information: %s, %s", buf, value);
- return (-1);
- break;
- }
-
- return 0;
-}
-
-
-int loadvolinfo (char *path, struct volinfo *vol)
-{
-
- char volinfofile[MAXPATHLEN];
- char buf[MAXPATHLEN];
- struct flock lock;
- int fd, len;
- FILE *fp;
-
- if ( !path || !vol)
- return -1;
-
- memset(vol, 0, sizeof(struct volinfo));
- strlcpy(volinfofile, path, sizeof(volinfofile));
-
- /* volinfo file is in .AppleDesktop */
- if ( NULL == find_volumeroot(volinfofile, sizeof(volinfofile)))
- return -1;
-
- if ((vol->v_path = strdup(volinfofile)) == NULL ) {
- fprintf (stderr, "strdup: %s", strerror(errno));
- return (-1);
- }
- /* Remove trailing slashes */
- len = strlen(vol->v_path);
- while (len && (vol->v_path[len-1] == '/')) {
- vol->v_path[len-1] = 0;
- len--;
- }
-
- strlcat(volinfofile, ".AppleDesktop/", sizeof(volinfofile));
- strlcat(volinfofile, VOLINFOFILE, sizeof(volinfofile));
-
- /* open the file read only */
- if ( NULL == (fp = fopen( volinfofile, "r")) ) {
- fprintf (stderr, "error opening volinfo (%s): %s", volinfofile, strerror(errno));
- return (-1);
- }
- fd = fileno(fp);
-
- /* try to get a read lock */
- lock.l_start = 0;
- lock.l_whence = SEEK_SET;
- lock.l_len = 0;
- lock.l_type = F_RDLCK;
-
- /* wait for read lock */
- if (fcntl(fd, F_SETLKW, &lock) < 0) {
- fclose(fp);
- return (-1);
- }
-
- /* read the file */
- while (NULL != fgets(buf, sizeof(buf), fp)) {
- parseline(buf, vol);
- }
-
- /* unlock file */
- lock.l_type = F_UNLCK;
- fcntl(fd, F_SETLK, &lock);
-
- /* Translate vol options to ad options like afp/volume.c does it */
- vol->v_ad_options = 0;
- if ((vol->v_flags & AFPVOL_NODEV))
- vol->v_ad_options |= ADVOL_NODEV;
- if ((vol->v_flags & AFPVOL_UNIX_PRIV))
- vol->v_ad_options |= ADVOL_UNIXPRIV;
- if ((vol->v_flags & AFPVOL_INV_DOTS))
- vol->v_ad_options |= ADVOL_INVDOTS;
-
- vol->retaincount = 1;
-
- fclose(fp);
- return 0;
-}
-
-/*!
- * Allocate a struct volinfo object for refcounting usage with retain and close, and
- * call loadvolinfo with it
- */
-struct volinfo *allocvolinfo(char *path)
-{
- struct volinfo *p = malloc(sizeof(struct volinfo));
- if (p == NULL)
- return NULL;
-
- if (loadvolinfo(path, p) == -1)
- return NULL;
-
- p->malloced = 1;
-
- return p;
-}
-
-void retainvolinfo(struct volinfo *vol)
-{
- vol->retaincount++;
-}
-
-/*!
- * Decrement retain count, free resources when retaincount reaches 0
- */
-int closevolinfo(struct volinfo *volinfo)
-{
- if (volinfo->retaincount <= 0)
- abort();
-
- volinfo->retaincount--;
-
- if (volinfo->retaincount == 0) {
- free(volinfo->v_name); volinfo->v_name = NULL;
- free(volinfo->v_path); volinfo->v_path = NULL;
- free(volinfo->v_cnidscheme); volinfo->v_cnidscheme = NULL;
- free(volinfo->v_dbpath); volinfo->v_dbpath = NULL;
- free(volinfo->v_volcodepage); volinfo->v_volcodepage = NULL;
- free(volinfo->v_maccodepage); volinfo->v_maccodepage = NULL;
- free(volinfo->v_dbd_host); volinfo->v_dbd_host = NULL;
- free(volinfo->v_dbd_port); volinfo->v_dbd_port = NULL;
- if (volinfo->malloced) {
- volinfo->malloced = 0;
- free(volinfo);
- }
- }
-
- return 0;
-}
-
-/*
- * Save the volume options to a file, used by shell utilities. Writing the file
- * everytime a volume is opened is unnecessary, but it shouldn't hurt much.
- */
-int savevolinfo(const struct vol *vol, const char *Cnid_srv, const char *Cnid_port)
-{
- uid_t process_uid;
- char buf[16348];
- char item[MAXPATHLEN];
- int fd;
- int ret = 0;
- struct flock lock;
- const vol_opt_name_t *op = &vol_opt_names[0];
- const vol_opt_name_t *cf = &vol_opt_casefold[0];
-
- strlcpy (item, vol->v_path, sizeof(item));
- strlcat (item, "/.AppleDesktop/", sizeof(item));
- strlcat (item, VOLINFOFILE, sizeof(item));
-
- process_uid = geteuid();
- if (process_uid) {
- if (seteuid(0) == -1) {
- process_uid = 0;
- }
- }
-
- if ((fd = open(item, O_RDWR | O_CREAT , 0666)) <0 ) {
- LOG(log_debug, logtype_default,"Error opening %s: %s", item, strerror(errno));
- if (process_uid) {
- if (seteuid(process_uid) == -1) {
- LOG(log_error, logtype_default, "can't seteuid back %s", strerror(errno));
- exit(EXITERR_SYS);
- }
- }
- return (-1);
- }
-
- if (process_uid) {
- if (seteuid(process_uid) == -1) {
- LOG(log_error, logtype_default, "can't seteuid back %s", strerror(errno));
- exit(EXITERR_SYS);
- }
- }
-
- /* try to get a lock */
- lock.l_start = 0;
- lock.l_whence = SEEK_SET;
- lock.l_len = 0;
- lock.l_type = F_WRLCK;
-
- if (fcntl(fd, F_SETLK, &lock) < 0) {
- if (errno == EACCES || errno == EAGAIN) {
- /* ignore, other process already writing the file */
- return 0;
- } else {
- LOG(log_error, logtype_default, "savevoloptions: cannot get lock: %s", strerror(errno));
- return (-1);
- }
- }
-
- /* write volume options */
- snprintf(buf, sizeof(buf), "MAC_CHARSET:%s\n", vol->v_maccodepage);
- snprintf(item, sizeof(item), "VOL_CHARSET:%s\n", vol->v_volcodepage);
- strlcat(buf, item, sizeof(buf));
-
- switch (vol->v_adouble) {
- case AD_VERSION2:
- strlcat(buf, "ADOUBLE_VER:v2\n", sizeof(buf));
- break;
- case AD_VERSION_EA:
- strlcat(buf, "ADOUBLE_VER:ea\n", sizeof(buf));
- break;
- }
-
- strlcat(buf, "CNIDBACKEND:", sizeof(buf));
- strlcat(buf, vol->v_cnidscheme, sizeof(buf));
- strlcat(buf, "\n", sizeof(buf));
-
- strlcat(buf, "CNIDDBDHOST:", sizeof(buf));
- strlcat(buf, Cnid_srv, sizeof(buf));
- strlcat(buf, "\n", sizeof(buf));
-
- strlcat(buf, "CNIDDBDPORT:", sizeof(buf));
- strlcat(buf, Cnid_port, sizeof(buf));
- strlcat(buf, "\n", sizeof(buf));
-
- strcpy(item, "CNID_DBPATH:");
- if (vol->v_dbpath)
- strlcat(item, vol->v_dbpath, sizeof(item));
- else
- strlcat(item, vol->v_path, sizeof(item));
- strlcat(item, "\n", sizeof(item));
- strlcat(buf, item, sizeof(buf));
-
- /* volume flags */
- strcpy(item, "VOLUME_OPTS:");
- for (;op->name; op++) {
- if ( (vol->v_flags & op->option) ) {
- strlcat(item, op->name, sizeof(item));
- strlcat(item, " ", sizeof(item));
- }
- }
- strlcat(item, "\n", sizeof(item));
- strlcat(buf, item, sizeof(buf));
-
- /* casefold flags */
- strcpy(item, "VOLCASEFOLD:");
- for (;cf->name; cf++) {
- if ( (vol->v_casefold & cf->option) ) {
- strlcat(item, cf->name, sizeof(item));
- strlcat(item, " ", sizeof(item));
- }
- }
- strlcat(item, "\n", sizeof(item));
- strlcat(buf, item, sizeof(buf));
-
- /* ExtendedAttributes */
- strcpy(item, "EXTATTRTYPE:");
- switch (vol->v_vfs_ea) {
- case AFPVOL_EA_SYS:
- strlcat(item, "AFPVOL_EA_SYS\n", sizeof(item));
- break;
- case AFPVOL_EA_AD:
- strlcat(item, "AFPVOL_EA_AD\n", sizeof(item));
- break;
- case AFPVOL_EA_NONE:
- strlcat(item, "AFPVOL_EA_NONE\n", sizeof(item));
- break;
- default:
- strlcat(item, "AFPVOL_EA_UNKNOWN\n", sizeof(item));
- }
-
- strlcat(buf, item, sizeof(buf));
-
- if (strlen(buf) >= sizeof(buf)-1)
- LOG(log_debug, logtype_default, "Error writing .volinfo file: buffer too small, %s", buf);
- if (write( fd, buf, strlen(buf)) < 0 || ftruncate(fd, strlen(buf)) < 0 ) {
- LOG(log_debug, logtype_default, "Error writing .volinfo file: %s", strerror(errno));
- }
-
- lock.l_type = F_UNLCK;
- fcntl(fd, F_SETLK, &lock);
- close (fd);
- return ret;
-}
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