X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=src%2Fextract.c;fp=src%2Fextract.c;h=f5a3a6eabfc7c7ecd89abe95449b32dbf7f4af51;hb=5dd3c3e64a9574112dda77a5afc167f5daa53fd8;hp=0000000000000000000000000000000000000000;hpb=bd21f0a1265b43ad5f05353a39db31c16826f05c;p=zpackage

diff --git a/src/extract.c b/src/extract.c
new file mode 100644
index 0000000..f5a3a6e
--- /dev/null
+++ b/src/extract.c
@@ -0,0 +1,99 @@
+#define _POSIX_C_SOURCE 2
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+
+#include <sys/mman.h>
+
+#include "zpm.h"
+
+/* more usage:
+ * -t : use a temp file, then move into place, possible reverse the sense
+ *  -u : userid
+ *  -g : groupid
+ *  -m : mode (i.e. final mode)
+	int mode = 0600;
+ *  -l : log all actions
+ *  -d : logging database file, if different
+ *
+ *  check if file exists, if it does, and has the same hash, do
+ *  nothing, unless -f is given
+ */ 
+
+void usage(void) {
+	fprintf(stderr, "usage: zpm-extract [-d dbfile] [-t tmpfile] hash [output]\n");
+}
+
+int main(int ac, char **av){
+	struct zpm pkg;
+	int rv;
+
+	char *tmpfile = 0, *output = 0;
+	int opt;
+	mode_t mode;
+	uid_t uid = 0;
+	gid_t gid = 0;
+	char *dest = 0, *hashmatch = 0;
+	char hash[ZPM_HASH_STRLEN+1];
+	char *dbfile = getenv("ZPMDB");
+	if (!dbfile) {
+		dbfile = "/var/lib/zpm/local.db";
+	}
+
+	while ((opt = getopt(ac, av, "f:")) != -1) {
+		switch (opt) {
+			case 'f': dbfile = optarg; break;
+			case 't': tmpfile = optarg; break;
+			case 'u': uid = atoi(optarg); break;
+			case 'g': gid = atoi(optarg); break;
+			case 'o': dest = optarg; break;
+			case 'm': mode = atoi(optarg); break;
+			default:
+				  usage();
+				  exit(EXIT_FAILURE);
+				  break;
+		}
+	}
+
+	if (ac < optind) {
+		usage();
+		exit(EXIT_FAILURE);
+	}
+
+	hashmatch = av[optind];
+
+	if (ac > optind) {
+		output = av[optind+1];
+	}
+
+	zpm_open(&pkg, dbfile);
+
+	rv = zpm_findhash(&pkg, hashmatch, hash);
+	if (rv == 0) {
+		fprintf(stderr, "no such hash %s\n", hashmatch);
+		exit(EXIT_FAILURE);
+	} else if (rv > 1) {
+		fprintf(stderr, "%d matching hashes for %s\n", rv, hashmatch);
+		exit(EXIT_FAILURE);
+	}
+
+	rv = zpm_extract(&pkg, hash, tmpfile ? tmpfile : output, 0600);
+	zpm_close(&pkg);
+
+	if (!rv) {
+		exit(EXIT_FAILURE);
+	}
+
+	/* set mode and such */
+
+	if (dest != tmpfile) {
+		rename(tmpfile, dest);
+	}
+
+	return rv ? 0 : 1;
+}