usr.sbin/pkg_install/updating/main.c

   1 /*-
   2  * ----------------------------------------------------------------------------
   3  * "THE BEER-WARE LICENSE" (Revision 42):
   4  * <beat@chruetertee.ch> wrote this file. As long as you retain this notice you
   5  * can do whatever you want with this stuff. If we meet some day, and you think
   6  * this stuff is worth it, you can buy me a beer in return.          Beat Gätzi
   7  * ----------------------------------------------------------------------------
   8  */
   9
  10 #include <sys/cdefs.h>
  11 __FBSDID("$FreeBSD$");
  12
  13
  14 #include <sys/param.h>
  15 #include <stdio.h>
  16 #include <errno.h>
  17 #include <fetch.h>
  18 #include <limits.h>
  19 #include <sysexits.h>
  20 #include <getopt.h>
  21
  22 #include "lib.h"
  23 #include "pathnames.h"
  24
  25 typedef struct installedport {
  26         struct installedport *next;                             /* List of installed ports. */
  27         char name[LINE_MAX];                                    /* Name of the installed port. */
  28 } INSTALLEDPORT;
  29
  30 int usage(void);
  31
  32 static char opts[] = "d:f:h";
  33 static struct option longopts[] = {
  34         { "date",       required_argument,      NULL,           'd' },
  35         { "file",       required_argument,      NULL,           'f' },
  36         { "help",       no_argument,            NULL,           'h' },
  37         { NULL,         0,                      NULL,           0 },
  38 };
  39
  40 /*
  41  * Parse /usr/port/UPDATING for corresponding entries. If no argument is
  42  * passed to pkg_updating all entries for all installed ports are displayed.
  43  * If a list of portnames is passed to pkg_updating only entries for the
  44  * given portnames are displayed. Use the -d option to define that only newer
  45  * entries as this date are shown.
  46  */
  47 int
  48 main(int argc, char *argv[])
  49 {
  50         /* Keyword for searching portname in UPDATING. */
  51         const char *affects = "AFFECTS";
  52         /* Indicate a date -> end of a entry. Will fail on 2100-01-01... */
  53         const char *end = "20";
  54         /* Keyword for searching origin portname of installed port. */
  55         const char *origin = "@comment ORIGIN:";
  56         const char *pkgdbpath = LOG_DIR;                /* Location of pkgdb */
  57         const char *updatingfile = UPDATING;    /* Location of UPDATING */
  58
  59         char *date = NULL;                                              /* Passed -d argument */
  60         char *dateline = NULL;                                  /* Saved date of an entry */
  61         /* Tmp lines for parsing file */
  62         char *tmpline1 = NULL;
  63         char *tmpline2 = NULL;
  64
  65         char originline[LINE_MAX];                              /* Line of +CONTENTS */
  66         /* Temporary variable to create path to +CONTENTS for installed ports. */
  67         char tmp_file[MAXPATHLEN];
  68         char updatingline[LINE_MAX];                    /* Line of UPDATING */
  69
  70         int ch;                                                                 /* Char used by getopt */
  71         int found = 0;                                                  /* Found an entry */
  72         int linelength;                                                 /* Length of parsed line */
  73         int maxcharperline = LINE_MAX;                  /* Max chars per line */
  74         int dflag = 0;                                                  /* -d option set */
  75         /* If pflag = 0 UPDATING will be checked for all installed ports. */
  76         int pflag = 0;
  77
  78         size_t n;                                                               /* Offset to create path */
  79
  80         struct dirent *pkgdbdir;                                /* pkgdb directory */
  81         struct stat attribute;                                  /* attribute of pkgdb element */
  82
  83         /* Needed nodes for linked list with installed ports. */
  84         INSTALLEDPORT *head = (INSTALLEDPORT *) NULL;
  85         INSTALLEDPORT *curr = (INSTALLEDPORT *) NULL;
  86
  87         DIR *dir;
  88         FILE *fd;
  89
  90         while ((ch = getopt_long(argc, argv, opts, longopts, NULL)) != -1) {
  91                 switch (ch) {
  92                         case 'd':
  93                                 dflag = 1;
  94                                 date = optarg;
  95                                 break;
  96                         case 'f':
  97                                 updatingfile = optarg;
  98                                 break;
  99                         case 'h':
 100                         default:
 101                                 usage();
 102                 }
 103         }
 104         argc -= optind;
 105         argv += optind;
 106
 107         /* Check if passed date has a correct format. */
 108         if (dflag == 1) {
 109                 linelength = strlen(date);
 110                 if (linelength != 8)
 111                         exit(EX_DATAERR);
 112                 if (strspn(date, "0123456789") != 8) {
 113                         fprintf(stderr, "unknown date format: %s\n", date);
 114                         exit(EX_DATAERR);
 115                 }
 116         }
 117
 118         /* Save the list of passed portnames. */
 119         if (argc != 0) {
 120                 pflag = 1;
 121                 while (*argv) {
 122                         if ((curr = (INSTALLEDPORT *)
 123                                 malloc(sizeof(INSTALLEDPORT))) == NULL)
 124                                 (void)exit(EXIT_FAILURE);
 125                         strlcpy(curr->name, *argv, strlen(*argv) + 1);
 126                         curr->next = head;
 127                         head = curr;
 128                         (void)*argv++;
 129                 }
 130         }
 131
 132         /*
 133          * UPDATING will be parsed for all installed ports
 134          * if no portname is passed.
 135          */
 136         if (pflag == 0) {
 137                 /* Open /var/db/pkg and search for all installed ports. */
 138                 if ((dir = opendir(pkgdbpath)) != NULL) {
 139                         while ((pkgdbdir = readdir(dir)) != NULL) {
 140                                 if (strcmp(pkgdbdir->d_name, ".") != 0 &&
 141                                         strcmp(pkgdbdir->d_name, "..") != 0) {
 142
 143                                         /* Create path to +CONTENTS file for each installed port */
 144                                         n = strlcpy(tmp_file, pkgdbpath, sizeof(tmp_file));
 145                                         n = strlcpy(tmp_file + n, "/", sizeof(tmp_file) - n);
 146                                         n = strlcat(tmp_file + n, pkgdbdir->d_name,
 147                                                 sizeof(tmp_file) - n);
 148                                         if (stat(tmp_file, &attribute) == -1) {
 149                                                 fprintf(stderr, "can't open %s: %s\n",
 150                                                         tmp_file, strerror(errno));
 151                                                 return EXIT_FAILURE;
 152                                         }
 153                                         if (attribute.st_mode & S_IFREG)
 154                                                 continue;
 155                                         (void)strlcat(tmp_file + n, "/",
 156                                                 sizeof(tmp_file) - n);
 157                                         (void)strlcat(tmp_file + n, CONTENTS_FNAME,
 158                                                 sizeof(tmp_file) - n);
 159
 160                                         /* Open +CONTENT file */
 161                                         fd = fopen(tmp_file, "r");
 162                                         if (fd == NULL) {
 163                                                 fprintf(stderr, "warning: can't open %s: %s\n",
 164                                                 tmp_file, strerror(errno));
 165                                                 continue;
 166                                         }
 167
 168                                         /*
 169                                          * Parses +CONTENT for ORIGIN line and
 170                                          * put element into linked list.
 171                                          */
 172                                         while (fgets(originline, maxcharperline, fd) != NULL) {
 173                                                 tmpline1 = strstr(originline, origin);
 174                                                 if (tmpline1 != NULL) {
 175                                                         /* Tmp variable to store port name. */
 176                                                         char *pname;
 177                                                         pname = strrchr(originline, (int)':');
 178                                                         pname++;
 179                                                         if ((curr = (INSTALLEDPORT *)
 180                                                                 malloc(sizeof(INSTALLEDPORT))) == NULL)
 181                                                                 (void)exit(EXIT_FAILURE);
 182                                                         if (pname[strlen(pname) - 1] == '\n')
 183                                                                 pname[strlen(pname) - 1] = '\0';
 184                                                         strlcpy (curr->name, pname, sizeof(curr->name));
 185                                                         curr->next = head;
 186                                                         head = curr;
 187                                                 }
 188                                         }
 189
 190                                         if (ferror(fd)) {
 191                                                 fprintf(stderr, "error reading input\n");
 192                                                 exit(EX_IOERR);
 193                                         }
 194
 195                                         (void)fclose(fd);
 196                                 }
 197                         }
 198                         closedir(dir);
 199                 }
 200         }
 201
 202         /* Fetch UPDATING file if needed and open file */
 203         if (isURL(updatingfile)) {
 204                 if ((fd = fetchGetURL(updatingfile, "")) == NULL) {
 205                         fprintf(stderr, "Error: Unable to get %s: %s\n",
 206                                 updatingfile, fetchLastErrString);
 207                         exit(EX_UNAVAILABLE);
 208                 }
 209         }
 210         else {
 211                 fd = fopen(updatingfile, "r");
 212         }
 213         if (fd == NULL) {
 214                 fprintf(stderr, "can't open %s: %s\n",
 215                         updatingfile, strerror(errno));
 216                 exit(EX_UNAVAILABLE);
 217         }
 218
 219         /* Parse opened UPDATING file. */
 220         while (fgets(updatingline, maxcharperline, fd) != NULL) {
 221                 /* No entry is found so far */
 222                 if (found == 0) {
 223                         /* Search for AFFECTS line to parse the portname. */
 224                         tmpline1 = strstr(updatingline, affects);
 225
 226                         if (tmpline1 != NULL) {
 227                                 curr = head;
 228                                 while (curr != NULL) {
 229                                         tmpline2 = strstr(updatingline, curr->name);
 230                                         if (tmpline2 != NULL)
 231                                                 break;
 232                                         curr = curr->next;
 233                                 }
 234                                 if (tmpline2 != NULL) {
 235                                         /* If -d is set, check if entry is newer than the date. */
 236                                         if ((dflag == 1) && (strncmp(dateline, date, 8) < 0))
 237                                                 continue;
 238                                         printf("%s", dateline);
 239                                         printf("%s", updatingline);
 240                                         found = 1;
 241                                 }
 242                         }
 243                 }
 244                 /* Search for the end of an entry, if not found print the line. */
 245                 else {
 246                         tmpline1 = strstr(updatingline, end);
 247                         if (tmpline1 == NULL)
 248                                 printf("%s", updatingline);
 249                         else {
 250                                 linelength = strlen(updatingline);
 251                                 if (linelength == 10)
 252                                         found = 0;
 253                                 else
 254                                         printf("%s", updatingline);
 255                         }
 256                 }
 257                 /* Save the actual line, it could be a date. */
 258                 dateline = strdup(updatingline);
 259         }
 260
 261         if (ferror(fd)) {
 262                 fprintf(stderr, "error reading input\n");
 263                 exit(EX_IOERR);
 264         }
 265         (void)fclose(fd);
 266
 267         exit(EX_OK);
 268 }
 269
 270 int
 271 usage(void)
 272 {
 273         fprintf(stderr,
 274                 "usage: pkg_updating [-h] [-d YYYYMMDD] [-f file] [portname ...]\n");
 275         exit(EX_USAGE);
 276 }
 277
 278 void
 279 cleanup(int sig)
 280 {
 281         if (sig)
 282                 exit(1);
 283 }