main.c revision 179433 
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 179433 2008-05-30 14:26:09Z flz $");
12
13#include <errno.h>
14#include <limits.h>
15#include <sysexits.h>
16#include <getopt.h>
17
18#include "lib.h"
19#include "pathnames.h"
20
21typedef struct installedport {
22	struct installedport *next;				/* List of installed ports. */
23	char name[LINE_MAX];					/* Name of the installed port. */
24} INSTALLEDPORT;
25
26int usage(void);
27
28static char opts[] = "d:f:h";
29static struct option longopts[] = {
30	{ "date",	required_argument,	NULL,		'd' },
31	{ "file",	required_argument,	NULL,		'f' },
32	{ "help",	no_argument,		NULL,		'h' },
33	{ NULL,		0,			NULL,		0 },
34};
35
36/*
37 * Parse /usr/port/UPDATING for corresponding entries. If no argument is
38 * passed to pkg_updating all entries for all installed ports are displayed.
39 * If a list of portnames is passed to pkg_updating only entries for the
40 * given portnames are displayed. Use the -d option to define that only newer
41 * entries as this date are shown.
42 */
43int
44main(int argc, char *argv[])
45{
46	/* Keyword for searching portname in UPDATING. */
47	const char *affects = "AFFECTS";
48	/* Indicate a date -> end of a entry. Will fail on 2100-01-01... */
49	const char *end = "20";
50	/* Keyword for searching origin portname of installed port. */
51	const char *origin = "@comment ORIGIN:";
52	const char *pkgdbpath = LOG_DIR;		/* Location of pkgdb */
53	const char *updatingfile = UPDATING;	/* Location of UPDATING */
54
55	char *date = NULL; 						/* Passed -d argument */
56	char *dateline = NULL;					/* Saved date of an entry */
57	/* Tmp lines for parsing file */
58	char *tmpline1 = NULL;
59	char *tmpline2 = NULL;
60
61	char originline[LINE_MAX];				/* Line of +CONTENTS */
62	/* Temporary variable to create path to +CONTENTS for installed ports. */
63	char tmp_file[MAXPATHLEN];
64	char updatingline[LINE_MAX];			/* Line of UPDATING */
65
66	int ch;									/* Char used by getopt */
67	int found = 0;							/* Found an entry */
68	int linelength;							/* Length of parsed line */
69	int maxcharperline = LINE_MAX;			/* Max chars per line */
70	int dflag = 0;							/* -d option set */
71	/* If pflag = 0 UPDATING will be checked for all installed ports. */
72	int pflag = 0;
73
74	size_t n;								/* Offset to create path */
75
76	struct dirent *pkgdbdir;				/* pkgdb directory */
77	struct stat attribute;					/* attribute of pkgdb element */
78
79	/* Needed nodes for linked list with installed ports. */
80	INSTALLEDPORT *head = (INSTALLEDPORT *) NULL;
81	INSTALLEDPORT *curr = (INSTALLEDPORT *) NULL;
82
83	DIR *dir;
84	FILE *fd;
85
86	while ((ch = getopt_long(argc, argv, opts, longopts, NULL)) != -1) {
87		switch (ch) {
88			case 'd':
89				dflag = 1;
90				date = optarg;
91				break;
92			case 'f':
93				updatingfile = optarg;
94				break;
95			case 'h':
96			default:
97				usage();
98		}
99	}
100	argc -= optind;
101	argv += optind;
102
103	/* Check if passed date has a correct format. */
104	if (dflag == 1) {
105		linelength = strlen(date);
106		if (linelength != 8)
107			exit(EX_DATAERR);
108		if (strspn(date, "0123456789") != 8) {
109			fprintf(stderr, "unknown date format: %s\n", date);
110			exit(EX_DATAERR);
111		}
112	}
113
114	/* Save the list of passed portnames. */
115	if (argc != 0) {
116		pflag = 1;
117		while (*argv) {
118			if((curr = (INSTALLEDPORT *)
119				malloc(sizeof(INSTALLEDPORT))) == NULL)
120				(void)exit(EXIT_FAILURE);
121			strlcpy (curr->name, *argv, strlen(*argv) + 1);
122			curr->next = head;
123			head = curr;
124			(void)*argv++;
125		}
126	}
127
128	/*
129	 * UPDATING will be parsed for all installed ports
130	 * if no portname is passed.
131	 */
132	if (pflag == 0) {
133		/* Open /var/db/pkg and search for all installed ports. */
134		if((dir = opendir(pkgdbpath)) != NULL) {
135			while ((pkgdbdir = readdir(dir)) != NULL) {
136				if (strcmp(pkgdbdir->d_name, ".") != 0 &&
137					strcmp(pkgdbdir->d_name, "..") !=0) {
138
139					/* Create path to +CONTENTS file for each installed port */
140					n = strlcpy(tmp_file, pkgdbpath, strlen(pkgdbpath)+1);
141					n = strlcpy(tmp_file + n, "/", sizeof(tmp_file) - n);
142					n = strlcat(tmp_file + n, pkgdbdir->d_name,
143						sizeof(tmp_file) - n);
144					if(stat(tmp_file, &attribute) == -1) {
145						fprintf(stderr, "can't open %s: %s\n",
146							tmp_file, strerror(errno));
147						return EXIT_FAILURE;
148					}
149					if(attribute.st_mode & S_IFREG)
150						continue;
151					(void)strlcat(tmp_file + n, "/",
152						sizeof(tmp_file) - n);
153					(void)strlcat(tmp_file + n, CONTENTS_FNAME,
154						sizeof(tmp_file) - n);
155
156					/* Open +CONTENT file */
157					fd = fopen(tmp_file, "r");
158					if(fd == NULL) {
159						fprintf(stderr, "warning: can't open %s: %s\n",
160						tmp_file, strerror(errno));
161						continue;
162					}
163
164					/*
165					 * Parses +CONTENT for ORIGIN line and
166					 * put element into linked list.
167					 */
168					while(fgets(originline, maxcharperline, fd) != NULL) {
169						tmpline1 = strstr(originline, origin);
170						if( tmpline1 != NULL ) {
171							/* Tmp variable to store port name. */
172							char *pname;
173							pname = strrchr(originline, (int)':');
174							pname++;
175							if((curr = (INSTALLEDPORT *)
176								malloc(sizeof(INSTALLEDPORT))) == NULL)
177								(void)exit(EXIT_FAILURE);
178							strlcpy (curr->name, pname, strlen(pname)+1);
179							curr->next = head;
180							head = curr;
181						}
182					}
183
184					if(ferror(fd)) {
185						fprintf(stderr, "error reading input\n");
186						exit(EX_IOERR);
187					}
188
189					(void)fclose(fd);
190				}
191			}
192			closedir(dir);
193		}
194	}
195
196	/* Open UPDATING file */
197	fd = fopen(updatingfile, "r");
198	if(fd == NULL) {
199		fprintf(stderr, "can't open %s: %s\n",
200		updatingfile, strerror(errno));
201		exit(EX_UNAVAILABLE);
202	}
203
204	/* Parse opened UPDATING file. */
205	while(fgets(updatingline, maxcharperline, fd) != NULL) {
206		/* No entry is found so far */
207		if (found == 0) {
208			/* Search for AFFECTS line to parse the portname. */
209			tmpline1 = strstr(updatingline, affects);
210
211			if( tmpline1 != NULL ) {
212				curr = head;
213				while(curr != NULL) {
214					tmpline2 = strstr(updatingline, curr->name);
215					if( tmpline2 != NULL )
216						break;
217					curr = curr->next;
218				}
219				if( tmpline2 != NULL ) {
220					/* If -d is set, check if entry is newer than the date. */
221					if ( (dflag == 1) && (strncmp(dateline, date, 8) < 0))
222						continue;
223					printf("%s", dateline);
224					printf("%s", updatingline);
225					found = 1;
226				}
227			}
228		}
229		/* Search for the end of an entry, if not found print the line. */
230		else {
231			tmpline1 = strstr(updatingline, end);
232			if( tmpline1 == NULL )
233				printf("%s", updatingline);
234			else {
235				linelength = strlen(updatingline);
236				if (linelength == 10)
237					found = 0;
238				else
239					printf("%s", updatingline);
240			}
241		}
242		/* Save the actual line, it could be a date. */
243		dateline = strdup(updatingline);
244	}
245
246	if(ferror(fd)) {
247		fprintf(stderr, "error reading input\n");
248		exit(EX_IOERR);
249	}
250	(void)fclose(fd);
251
252	exit(EX_OK);
253}
254
255int
256usage(void)
257{
258	fprintf(stderr,
259		"usage: pkg_updating [-h] [-d YYYYMMDD] [-f file] [portname ...]\n");
260	exit(EX_USAGE);
261}
262
263void
264cleanup(int sig)
265{
266	if (sig)
267		exit(1);
268}
269