main.c revision 173514 
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 G�tzi
7 * ----------------------------------------------------------------------------
8 */
9
10#include <sys/cdefs.h>
11__FBSDID("$FreeBSD: head/usr.sbin/pkg_install/updating/main.c 173514 2007-11-10 10:21:29Z krion $");
12
13#include <errno.h>
14#include <limits.h>
15#include <sysexits.h>
16
17#include "lib.h"
18#include "pathnames.h"
19
20typedef struct installedport {
21	struct installedport *next;				/* List of installed ports. */
22	char name[LINE_MAX];					/* Name of the installed port. */
23} INSTALLEDPORT;
24
25int usage(void);
26
27/*
28 * Parse /usr/port/UPDATING for corresponding entries. If no argument is
29 * passed to pkg_updating all entries for all installed ports are displayed.
30 * If a list of portnames is passed to pkg_updating only entries for the
31 * given portnames are displayed. Use the -d option to define that only newer
32 * entries as this date are shown.
33 */
34int
35main(int argc, char *argv[])
36{
37	/* Keyword for searching portname in UPDATING. */
38	const char *affects = "AFFECTS";
39	/* Indicate a date -> end of a entry. Will fail on 2100-01-01... */
40	const char *end = "20";
41	/* Keyword for searching origin portname of installed port. */
42	const char *origin = "@comment ORIGIN:";
43	const char *pkgdbpath = LOG_DIR;		/* Location of pkgdb */
44	const char *updatingfile = UPDATING;	/* Location of UPDATING */
45
46	char *date = NULL; 						/* Passed -d argument */
47	char *dateline = NULL;					/* Saved date of an entry */
48	/* Tmp lines for parsing file */
49	char *tmpline1 = NULL;
50	char *tmpline2 = NULL;
51
52	char originline[LINE_MAX];				/* Line of +CONTENTS */
53	/* Temporary variable to create path to +CONTENTS for installed ports. */
54	char tmp_file[MAXPATHLEN];
55	char updatingline[LINE_MAX];			/* Line of UPDATING */
56
57	int ch;									/* Char used by getopt */
58	int found = 0;							/* Found an entry */
59	int linelength;							/* Length of parsed line */
60	int maxcharperline = LINE_MAX;			/* Max chars per line */
61	int dflag = 0;							/* -d option set */
62	/* If pflag = 0 UPDATING will be checked for all installed ports. */
63	int pflag = 0;
64
65	size_t n;								/* Offset to create path */
66
67	struct dirent *pkgdbdir;				/* pkgdb directory */
68	struct stat attribute;					/* attribute of pkgdb element */
69
70	/* Needed nodes for linked list with installed ports. */
71	INSTALLEDPORT *head = (INSTALLEDPORT *) NULL;
72	INSTALLEDPORT *curr = (INSTALLEDPORT *) NULL;
73
74	DIR *dir;
75	FILE *fd;
76
77	while ((ch = getopt(argc, argv, "f:d:")) != -1) {
78		switch (ch) {
79			case 'd':
80				dflag = 1;
81				date = optarg;
82				break;
83			case 'f':
84				updatingfile = optarg;
85				break;
86			case '?':
87			default:
88				usage();
89		}
90	}
91	argc -= optind;
92	argv += optind;
93
94	/* Check if passed date has a correct format. */
95	if (dflag == 1) {
96		linelength = strlen(date);
97		if (linelength != 8)
98			exit(EX_DATAERR);
99		if (strspn(date, "0123456789") != 8) {
100			fprintf(stderr, "unknown date format: %s\n", date);
101			exit(EX_DATAERR);
102		}
103	}
104
105	/* Save the list of passed portnames. */
106	if (argc != 0) {
107		pflag = 1;
108		while (*argv) {
109			if((curr = (INSTALLEDPORT *)
110				malloc(sizeof(INSTALLEDPORT))) == NULL)
111				(void)exit(EXIT_FAILURE);
112			strlcpy (curr->name, *argv, strlen(*argv) + 1);
113			curr->next = head;
114			head = curr;
115			(void)*argv++;
116		}
117	}
118
119	/*
120	 * UPDATING will be parsed for all installed ports
121	 * if no portname is passed.
122	 */
123	if (pflag == 0) {
124		/* Open /var/db/pkg and search for all installed ports. */
125		if((dir = opendir(pkgdbpath)) != NULL) {
126			while ((pkgdbdir = readdir(dir)) != NULL) {
127				if (strcmp(pkgdbdir->d_name, ".") != 0 &&
128					strcmp(pkgdbdir->d_name, "..") !=0) {
129
130					/* Create path to +CONTENTS file for each installed port */
131					n = strlcpy(tmp_file, pkgdbpath, strlen(pkgdbpath)+1);
132					n = strlcpy(tmp_file + n, "/", sizeof(tmp_file) - n);
133					n = strlcat(tmp_file + n, pkgdbdir->d_name,
134						sizeof(tmp_file) - n);
135					if(stat(tmp_file, &attribute) == -1) {
136						fprintf(stderr, "can't open %s: %s\n",
137							tmp_file, strerror(errno));
138						return EXIT_FAILURE;
139					}
140					if(attribute.st_mode & S_IFREG)
141						continue;
142					(void)strlcat(tmp_file + n, "/",
143						sizeof(tmp_file) - n);
144					(void)strlcat(tmp_file + n, CONTENTS_FNAME,
145						sizeof(tmp_file) - n);
146
147					/* Open +CONTENT file */
148					fd = fopen(tmp_file, "r");
149					if(fd == NULL) {
150						fprintf(stderr, "warning: can't open %s: %s\n",
151						tmp_file, strerror(errno));
152						continue;
153					}
154
155					/*
156					 * Parses +CONTENT for ORIGIN line and
157					 * put element into linked list.
158					 */
159					while(fgets(originline, maxcharperline, fd) != NULL) {
160						tmpline1 = strstr(originline, origin);
161						if( tmpline1 != NULL ) {
162							/* Tmp variable to store port name. */
163							char *pname;
164							pname = strrchr(originline, (int)':');
165							pname++;
166							if((curr = (INSTALLEDPORT *)
167								malloc(sizeof(INSTALLEDPORT))) == NULL)
168								(void)exit(EXIT_FAILURE);
169							strlcpy (curr->name, pname, strlen(pname)+1);
170							curr->next = head;
171							head = curr;
172						}
173					}
174
175					if(ferror(fd)) {
176						fprintf(stderr, "error reading input\n");
177						exit(EX_IOERR);
178					}
179
180					(void)fclose(fd);
181				}
182			}
183			closedir(dir);
184		}
185	}
186
187	/* Open UPDATING file */
188	fd = fopen(updatingfile, "r");
189	if(fd == NULL) {
190		fprintf(stderr, "can't open %s: %s\n",
191		updatingfile, strerror(errno));
192		exit(EX_UNAVAILABLE);
193	}
194
195	/* Parse opened UPDATING file. */
196	while(fgets(updatingline, maxcharperline, fd) != NULL) {
197		/* No entry is found so far */
198		if (found == 0) {
199			/* Search for AFFECTS line to parse the portname. */
200			tmpline1 = strstr(updatingline, affects);
201
202			if( tmpline1 != NULL ) {
203				curr = head;
204				while(curr != NULL) {
205					tmpline2 = strstr(updatingline, curr->name);
206					if( tmpline2 != NULL )
207						break;
208					curr = curr->next;
209				}
210				if( tmpline2 != NULL ) {
211					/* If -d is set, check if entry is newer than the date. */
212					if ( (dflag == 1) && (strncmp(dateline, date, 8) < 0))
213						continue;
214					printf("%s", dateline);
215					printf("%s", updatingline);
216					found = 1;
217				}
218			}
219		}
220		/* Search for the end of an entry, if not found print the line. */
221		else {
222			tmpline1 = strstr(updatingline, end);
223			if( tmpline1 == NULL )
224				printf("%s", updatingline);
225			else {
226				linelength = strlen(updatingline);
227				if (linelength == 10)
228					found = 0;
229				else
230					printf("%s", updatingline);
231			}
232		}
233		/* Save the actual line, it could be a date. */
234		dateline = strdup(updatingline);
235	}
236
237	if(ferror(fd)) {
238		fprintf(stderr, "error reading input\n");
239		exit(EX_IOERR);
240	}
241	(void)fclose(fd);
242
243	exit(EX_OK);
244}
245
246int
247usage(void)
248{
249	fprintf(stderr,
250		"usage: pkg_updating [-d YYYYMMDD] [-f file] [portname ...]\n");
251	exit(EX_USAGE);
252}
253
254void
255cleanup(int sig)
256{
257	if (sig)
258		exit(1);
259}
260