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-rw-r--r--dpkg.c269
1 files changed, 140 insertions, 129 deletions
diff --git a/dpkg.c b/dpkg.c
index 7b4c74d7d..4a5c6f4da 100644
--- a/dpkg.c
+++ b/dpkg.c
@@ -11,18 +11,13 @@
#include "busybox.h"
-//#define PACKAGE "udpkg"
-//#define VERSION "0.1"
+#define DEPENDSMAX 64 /* maximum number of depends we can handle */
-/*
- * Should we do full dependency checking?
- */
+/* Should we do full dependency checking? */
#define DODEPENDS 1
-/*
- * Should we do debugging?
- */
-#define DODEBUG 0
+/* Should we do debugging? */
+#define DODEBUG 1
#ifdef DODEBUG
#define SYSTEM(x) do_system(x)
@@ -32,15 +27,20 @@
#define DPRINTF(fmt,args...) /* nothing */
#endif
-#define BUFSIZE 4096
-#define DEPENDSMAX 64 /* maximum number of depends we can handle */
+/* from dpkg-deb.c */
+extern int deb_extract(int optflags, const char *dir_name, const char *deb_filename);
+static const int dpkg_deb_contents = 1;
+static const int dpkg_deb_control = 2;
+// const int dpkg_deb_info = 4;
+static const int dpkg_deb_extract = 8;
+static const int dpkg_deb_verbose_extract = 16;
+static const int dpkg_deb_list = 32;
static const char statusfile[] = "/var/lib/dpkg/status.udeb";
static const char new_statusfile[] = "/var/lib/dpkg/status.udeb.new";
static const char bak_statusfile[] = "/var/lib/dpkg/status.udeb.bak";
static const char dpkgcidir[] = "/var/lib/dpkg/tmp.ci/";
-static const char rm_dpkgcidir[] = "rm -rf /var/lib/dpkg/tmp.ci/";
static const char infodir[] = "/var/lib/dpkg/info/";
static const char udpkg_quiet[] = "UDPKG_QUIET";
@@ -115,6 +115,21 @@ static int package_compare(const void *p1, const void *p2)
((package_t *)p2)->package);
}
+static int remove_dpkgcidir()
+{
+ char *rm_dpkgcidir = NULL;
+
+ rm_dpkgcidir = (char *) xmalloc(strlen(dpkgcidir) + 8);
+ strcpy(rm_dpkgcidir, "rm -rf ");
+ strcat(rm_dpkgcidir, dpkgcidir);
+
+ if (SYSTEM(rm_dpkgcidir) != 0) {
+ perror("mkdir ");
+ return EXIT_FAILURE;
+ }
+ return EXIT_SUCCESS;
+}
+
#ifdef DODEPENDS
#include <ctype.h>
@@ -342,7 +357,7 @@ static const char *status_print(unsigned long flags)
* Read a control file (or a stanza of a status file) and parse it,
* filling parsed fields into the package structure
*/
-static void control_read(FILE *file, package_t *p)
+static int control_read(FILE *file, package_t *p)
{
char *line;
@@ -374,6 +389,7 @@ static void control_read(FILE *file, package_t *p)
/* TODO: localized descriptions */
}
free(line);
+ return EXIT_SUCCESS;
}
static void *status_read(void)
@@ -558,62 +574,52 @@ static int dpkg_doconfigure(package_t *pkg)
static int dpkg_dounpack(package_t *pkg)
{
int r = 0, i;
- char *cwd, *p;
- FILE *infp, *outfp;
+ char *cwd;
+ FILE *outfp;
+ char *src_file = NULL;
+ char *dst_file = NULL;
+ char *lst_file = NULL;
+ char *adminscripts[] = { "/prerm", "/postrm", "/preinst", "/postinst",
+ "/conffiles", "/md5sums", "/shlibs", "/templates" };
char buf[1024], buf2[1024];
- char *adminscripts[] = { "prerm", "postrm", "preinst", "postinst",
- "conffiles", "md5sums", "shlibs", "templates" };
DPRINTF("Unpacking %s\n", pkg->package);
cwd = getcwd(0, 0);
chdir("/");
- snprintf(buf, sizeof(buf), "ar -p %s data.tar.gz|zcat|tar -xf -", pkg->file);
- if (SYSTEM(buf) != 0) {
- goto end;
- }
+ deb_extract(dpkg_deb_extract, "/", pkg->file);
+
/* Installs the package scripts into the info directory */
for (i = 0; i < sizeof(adminscripts) / sizeof(adminscripts[0]); i++) {
- snprintf(buf, sizeof(buf), "%s%s/%s",
- dpkgcidir, pkg->package, adminscripts[i]);
- snprintf(buf2, sizeof(buf), "%s%s.%s",
- infodir, pkg->package, adminscripts[i]);
- if (copy_file(buf, buf2, TRUE, FALSE, FALSE) < 0) {
- fprintf(stderr, "Cannot copy %s to %s: %s\n",
- buf, buf2, strerror(errno));
- r = 1;
- break;
+ /* The full path of the current location of the admin file */
+ src_file = xrealloc(src_file, strlen(dpkgcidir) + strlen(pkg->package) + strlen(adminscripts[i]) + 1);
+ strcpy(src_file, dpkgcidir);
+ strcat(src_file, pkg->package);
+ strcat(src_file, adminscripts[i]);
+
+ /* the full path of where we want the file to be copied to */
+ dst_file = xrealloc(dst_file, strlen(infodir) + strlen(pkg->package) + strlen(adminscripts[i]) + 1);
+ strcpy(dst_file, infodir);
+ strcat(dst_file, pkg->package);
+ strcat(dst_file, adminscripts[i]);
+
+ /* copy admin file to permanent home */
+ if (copy_file(src_file, dst_file, TRUE, FALSE, FALSE) < 0) {
+ error_msg_and_die("Cannot copy %s to %s ", buf, buf2);
}
- /* ugly hack to create the list file; should
- * probably do something more elegant
- *
- * why oh why does dpkg create the list file
- * so oddly...
- */
- snprintf(buf, sizeof(buf), "ar -p %s data.tar.gz|zcat|tar -tf -", pkg->file);
- snprintf(buf2, sizeof(buf2), "%s%s.list", infodir, pkg->package);
- if ((infp = popen(buf, "r")) == NULL || (outfp = fopen(buf2, "w")) == NULL) {
- fprintf(stderr, "Cannot create %s\n", buf2);
- r = 1;
- break;
- }
- while (fgets(buf, sizeof(buf), infp) && !feof(infp)) {
- p = buf;
- if (*p == '.') {
- p++;
- }
- if ((*p == '/') && (*(p + 1) == '\n')) {
- *(p + 1) = '.';
- *(p + 2) = '\n';
- *(p + 3) = 0;
- }
- if (p[strlen(p) - 2] == '/') {
- p[strlen(p) - 2] = '\n';
- p[strlen(p) - 1] = 0;
- }
- fputs(p, outfp);
- }
- fclose(infp);
+
+ /* create the list file */
+ lst_file = (char *) malloc(strlen(infodir) + strlen(pkg->package) + 6);
+ strcpy(lst_file, infodir);
+ strcat(lst_file, pkg->package);
+ strcat(lst_file, ".list");
+ outfp = freopen(lst_file, "w", stdout);
+ deb_extract(dpkg_deb_list, NULL, pkg->file);
+ stdout = freopen(NULL, "w", outfp);
+
+ printf("done\n");
+ getchar();
+
fclose(outfp);
}
@@ -628,80 +634,86 @@ static int dpkg_dounpack(package_t *pkg)
} else {
pkg->status |= status_statushalfinstalled;
}
-end:
chdir(cwd);
return r;
}
-static int dpkg_doinstall(package_t *pkg)
-{
- DPRINTF("Installing %s\n", pkg->package);
- return (dpkg_dounpack(pkg) || dpkg_doconfigure(pkg));
-}
-
+/*
+ * Extract and parse the control.tar.gz from the specified package
+ */
static int dpkg_unpackcontrol(package_t *pkg)
{
- int r = 1;
- char *cwd = 0;
- char *p;
- char buf[1024];
- FILE *f;
+ char *tmp_name;
+ FILE *file;
+ int length;
- p = strrchr(pkg->file, '/');
- if (p) p++; else p = pkg->file;
- p = pkg->package = strdup(p);
- while (*p != 0 && *p != '_' && *p != '.') {
- p++;
+ /* clean the temp directory (dpkgcidir) be recreating it */
+ remove_dpkgcidir();
+ if (mkdir(dpkgcidir, S_IRWXU) != 0) {
+ perror("mkdir");
+ return EXIT_FAILURE;
}
- *p = 0;
- cwd = getcwd(0, 0);
- snprintf(buf, sizeof(buf), "%s%s", dpkgcidir, pkg->package);
- DPRINTF("dir = %s\n", buf);
-
- if (mkdir(buf, S_IRWXU) == 0 && chdir(buf) == 0) {
- snprintf(buf, sizeof(buf), "ar -p %s control.tar.gz|zcat|tar -xf -", pkg->file);
- if (SYSTEM(buf) == 0) {
- if ((f = fopen("control", "r")) != NULL) {
- control_read(f, pkg);
- r = 0;
- }
- }
+ /*
+ * Get the package name from the file name,
+ * first remove the directories
+ */
+ if ((tmp_name = strrchr(pkg->file, '/')) == NULL) {
+ tmp_name = pkg->file;
+ } else {
+ tmp_name++;
}
- chdir(cwd);
- free(cwd);
+ /* now remove trailing version numbers etc */
+ length = strcspn(tmp_name, "_.");
+ pkg->package = (char *) xmalloc(length + 1);
+ /* store the package name */
+ strncpy(pkg->package, tmp_name, length);
- return r;
+ /* work out the full extraction path */
+ tmp_name = (char *) xmalloc(strlen(dpkgcidir) + strlen(pkg->package) + 9);
+ memset(tmp_name, 0, strlen(dpkgcidir) + strlen(pkg->package) + 9);
+ strcpy(tmp_name, dpkgcidir);
+ strcat(tmp_name, pkg->package);
+
+ /* extract control.tar.gz to the full extraction path */
+ deb_extract(dpkg_deb_control, tmp_name, pkg->file);
+
+ /* parse the extracted control file */
+ strcat(tmp_name, "/control");
+ if ((file = fopen(tmp_name, "r")) == NULL) {
+ return EXIT_FAILURE;
+ }
+ if (control_read(file, pkg) == EXIT_FAILURE) {
+ return EXIT_FAILURE;
+ }
+
+ return EXIT_SUCCESS;
}
-static int dpkg_unpack(package_t *pkgs)
+static int dpkg_unpack(package_t *pkgs, void *status)
{
int r = 0;
package_t *pkg;
- void *status = status_read();
- if (SYSTEM(rm_dpkgcidir) != 0 ||
- mkdir(dpkgcidir, S_IRWXU) != 0) {
- perror("mkdir");
- return 1;
- }
for (pkg = pkgs; pkg != 0; pkg = pkg->next) {
- dpkg_unpackcontrol(pkg);
- r = dpkg_dounpack(pkg);
- if (r != 0) break;
+ if (dpkg_unpackcontrol(pkg) == EXIT_FAILURE) {
+ return EXIT_FAILURE;
+ }
+ if ((r = dpkg_dounpack(pkg)) != 0 ) {
+ break;
+ }
}
status_merge(status, pkgs);
- SYSTEM(rm_dpkgcidir);
+ remove_dpkgcidir();
return r;
}
-static int dpkg_configure(package_t *pkgs)
+static int dpkg_configure(package_t *pkgs, void *status)
{
int r = 0;
void *found;
package_t *pkg;
- void *status = status_read();
for (pkg = pkgs; pkg != 0 && r == 0; pkg = pkg->next) {
found = tfind(pkg, &status, package_compare);
@@ -722,25 +734,18 @@ static int dpkg_configure(package_t *pkgs)
return r;
}
-static int dpkg_install(package_t *pkgs)
+static int dpkg_install(package_t *pkgs, void *status)
{
package_t *p, *ordered = 0;
- void *status = status_read();
- if (SYSTEM(rm_dpkgcidir) != 0 ||
- mkdir(dpkgcidir, S_IRWXU) != 0) {
- perror("mkdir");
- return 1;
- }
-
/* Stage 1: parse all the control information */
- for (p = pkgs; p != 0; p = p->next)
- if (dpkg_unpackcontrol(p) != 0) {
+ for (p = pkgs; p != 0; p = p->next) {
+ if (dpkg_unpackcontrol(p) == EXIT_FAILURE) {
perror(p->file);
- /* force loop break, and prevents further ops */
- pkgs = 0;
+ return EXIT_FAILURE;
}
-
+ }
+
/* Stage 2: resolve dependencies */
#ifdef DODEPENDS
ordered = depends_resolve(pkgs, status);
@@ -759,7 +764,11 @@ static int dpkg_install(package_t *pkgs)
p->status &= status_flagmask;
p->status |= status_flagok;
- if (dpkg_doinstall(p) != 0) {
+ DPRINTF("Installing %s\n", p->package);
+ if (dpkg_dounpack(p) != 0) {
+ perror(p->file);
+ }
+ if (dpkg_doconfigure(p) != 0) {
perror(p->file);
}
}
@@ -767,15 +776,14 @@ static int dpkg_install(package_t *pkgs)
if (ordered != 0) {
status_merge(status, pkgs);
}
- SYSTEM(rm_dpkgcidir);
+ remove_dpkgcidir();
return 0;
}
-static int dpkg_remove(package_t *pkgs)
+static int dpkg_remove(package_t *pkgs, void *status)
{
package_t *p;
- void *status = status_read();
for (p = pkgs; p != 0; p = p->next)
{
@@ -791,6 +799,7 @@ extern int dpkg_main(int argc, char **argv)
char *s;
package_t *p, *packages = NULL;
char *cwd = getcwd(0, 0);
+ void *status = NULL;
while (*++argv) {
if (**argv == '-') {
@@ -819,17 +828,19 @@ extern int dpkg_main(int argc, char **argv)
}
}
+ status = status_read();
+
switch (opt) {
case 'i':
- return dpkg_install(packages);
+ return dpkg_install(packages, status);
case 'r':
- return dpkg_remove(packages);
+ return dpkg_remove(packages, status);
case 'u':
- return dpkg_unpack(packages);
+ return dpkg_unpack(packages, status);
case 'c':
- return dpkg_configure(packages);
- default :
+ return dpkg_configure(packages, status);
+ default :
usage(dpkg_usage);
- return 0;
+ return EXIT_FAILURE;
}
} \ No newline at end of file
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-04 21:20:45 +0000