]> pd.if.org Git - zpackage/blobdiff - lib/zpm.c
use tempfile when extracting
[zpackage] / lib / zpm.c
index 004b7d393e4f9765c05680ef4ec211e2235d6dd7..f0a0ba256888317757b37f9df104fca9b8f25131 100644 (file)
--- a/lib/zpm.c
+++ b/lib/zpm.c
@@ -258,7 +258,6 @@ static
 #include "newdb.c"
 
 int zpm_db_initialize(struct zpm *pkg) {
-       //fprintf(stderr, "initializing zpm database\n");
        char *error;
        switch (sqlite3_exec(pkg->db, createdb, (int (*)(void *,int,char **,char **))0, NULL, &error)) {
                case SQLITE_OK: break;
@@ -266,6 +265,7 @@ int zpm_db_initialize(struct zpm *pkg) {
                        SQLERROR(sqlite3_errmsg(pkg->db));
                        fprintf(stderr, "error: %s\n", error);
                        sqlite3_free(error);
+                       zpm_rollback(pkg);
                        return 0;
                        break;
        }
@@ -323,17 +323,44 @@ struct zpm *zpm_clearmem(struct zpm *zpm) {
        return zpm;
 }
 
+static void zpm_set_db_errmsg(struct zpm *zpm, const char *msg) {
+       if (zpm) {
+               if (zpm->dberrmsg) {
+                       free(zpm->dberrmsg);
+               }
+               if (msg) {
+                       zpm->dberrmsg = strdup(msg);
+                       if (!zpm->dberrmsg) {
+                               zpm->error = 1;
+                       }
+               } else {
+                       zpm->dberrmsg = 0;
+               }
+       }
+}
+
 int zpm_init(struct zpm *pkg, char *path) {
        int rc;
        sqlite3 *db = 0;
        int appid;
 
+       if (!pkg) {
+               return 0;
+       }
+
        zpm_clearmem(pkg);
 
        rc = sqlite3_open_v2(path, &db, SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE, NULL);
        if (rc) {
-               SQLERROR(sqlite3_errmsg(db));
-               sqlite3_close(db);
+               pkg->error = 1;
+               pkg->dbresult = rc;
+               zpm_set_db_errmsg(pkg, sqlite3_errstr(rc));
+               if (db) {
+                       sqlite3_close(db);
+               }
+               fprintf(stderr, "error (%d): %s: %s\n", rc,
+                               pkg->dberrmsg ? pkg->dberrmsg : "null", path);
+
                return 0;
        }
        pkg->db   = db;
@@ -362,6 +389,7 @@ int zpm_init(struct zpm *pkg, char *path) {
                pkg->db = 0;
                return 0;
        }
+       zpm_addvercmp(pkg);
 
        return 1;
 }
@@ -389,6 +417,7 @@ int zpm_open(struct zpm *zpm, char *path) {
                zpm->error = 1;
                return 0;
        }
+       zpm_addvercmp(zpm);
 
        return 1;
 }
@@ -418,18 +447,21 @@ int zpm_addvercmp(struct zpm *pkg) {
                        );
 }
 
-int zpm_extract(struct zpm *pkg, char *hash, char *path, int mode) {
+int zpm_extract(struct zpm *pkg, char *hash, char *path, mode_t mode) {
        int rc;
-
        int blobsize;
-       //int64_t size;
        void *xzdata;
        int type;
-       FILE *out;
+       int out;
        sqlite3_stmt *ifile;
+       size_t len;
+       char *tmpfile = 0;
+       sqlite3 *db;
 
-       /* TODO check null */
-       sqlite3 *db = pkg->db;
+       if (!pkg || !pkg->db) {
+               return 0;
+       }
+       db = pkg->db;
 
        rc = sqlite3_prepare(db, "select size, content from files where hash = ?", -1, &ifile,0);
        if (rc != SQLITE_OK) {
@@ -478,26 +510,55 @@ int zpm_extract(struct zpm *pkg, char *hash, char *path, int mode) {
        blobsize = sqlite3_column_bytes(ifile, 1);
 
        if (strcmp(path, "-")) {
-               out = fopen(path, "w");
+               len = strlen(path);
+               tmpfile = malloc(len+8+1);
+               if (!tmpfile) {
+                       fprintf(stderr, "malloc error\n");
+                       return 0;
+               }
+               sprintf(tmpfile, "%sXXXXXX", path);
+
+               out = open(tmpfile, O_CREAT|O_WRONLY|O_TRUNC, 0600);
+               if (out == -1) {
+                       fprintf(stderr, "can't open output file %s: %s\n",
+                                       tmpfile, strerror(errno));
+                       sqlite3_finalize(ifile);
+                       sqlite3_close(db);
+                       return 0;
+               }
        } else {
-               out = stdout;
-       }
-       if (!out) {
-               fprintf(stderr, "can't open output file %s\n", path);
-               sqlite3_finalize(ifile);
-               sqlite3_close(db);
-               return 0;
+               out = 1;
        }
-       //fwrite(xzdata, blobsize, 1, stdout);
 
-       //fprintf(stderr, "uncompressing %d bytes at %p, expect %lld\n", blobsize, xzdata, (long long int)size);
+#if 0
+       fprintf(stderr, "uncompressing %d bytes at %p, expect %lld\n", blobsize, xzdata, (long long int)size);
+#endif
        uncompresslzma(xzdata, blobsize, out);
-       fclose(out);
-       chmod(path, mode);
-
+       close(out);
        sqlite3_finalize(ifile);
 
-       return 1;
+       rc = 1;
+       if (tmpfile) {
+               if (chmod(tmpfile, mode) == -1) {
+                       fprintf(stderr, "can't chmod %s: %s\n", tmpfile,
+                                       strerror(errno));
+                       rc = 0;
+               } else if (rename(tmpfile, path) == -1) {
+                       fprintf(stderr, "extract rename failed: %s\n",
+                                       strerror(errno));
+                       rc = 0;
+               }
+       }
+
+       if (rc == 0 && tmpfile) {
+               if (unlink(tmpfile) == -1) {
+                       fprintf(stderr, "unlink tmpfile %s fail: %s\n",
+                                       tmpfile,
+                                       strerror(errno));
+               }
+       }
+
+       return rc;
 }
 
 static int run_for_hash(sqlite3 *db, char *sql, char *hash) {
@@ -535,10 +596,6 @@ static int set_elf_info(sqlite3 *db, char *hash, char *content, size_t length) {
                int rc;
 
                /* clear existing for this hash */
-               if (!run_for_hash(db, "delete from elfinfo where file = ?", hash)) {
-                       SQLERP(db, "error clearing elf info");
-                       return 0;
-               }
 
                if (!run_for_hash(db, "delete from elflibraries where file = ?", hash)) {
                        SQLERP(db, "error clearing elf library");
@@ -574,7 +631,7 @@ static int set_elf_info(sqlite3 *db, char *hash, char *content, size_t length) {
 
                /* if exe, set neededs */
                if (libelf_type(content) == ET_EXEC) {
-                       Elf64_Shdr *dsect;
+                       Elf64_Shdr *dsect = 0;
                        char *elf;
 
                        elf = (char *)content;
@@ -585,10 +642,17 @@ static int set_elf_info(sqlite3 *db, char *hash, char *content, size_t length) {
                                        dsect = (Elf64_Shdr *)(elf + phdr->p_offset);
                                }
                        }
+                       if (!dsect) {
+                               /* no dynamic section found */
+                               return 1;
+                       }
+
+#if 0
                        dyn = (Elf64_Dyn *)(elf + dsect->sh_offset);
                        if (!dyn) {
                                exit(9);
                        }
+#endif
                        dyn = (Elf64_Dyn *)dsect;
 
                        dsect = libelf_section(elf, SHT_DYNAMIC);
@@ -626,14 +690,13 @@ static int set_elf_info(sqlite3 *db, char *hash, char *content, size_t length) {
        return 1;
 }
 
-#if 1
 int zpm_import(struct zpm *zpm, char *path, uint32_t flags, char *hash) {
        int fd;
-       void *content;
+       void *content = 0;
        struct stat sbuf;
        unsigned char tmp[32];
        struct sha256_state md;
-       sqlite3_stmt *ifile;
+       sqlite3_stmt *ifile = 0;
        int haverow = 0,havedata = 0;
        int j,rc,type;
        char hashbuf[65];
@@ -700,7 +763,6 @@ int zpm_import(struct zpm *zpm, char *path, uint32_t flags, char *hash) {
                sprintf(hash+j*2, "%02x", (unsigned)tmp[j]);
        }
        hash[64] = 0;
-       //fprintf(stderr, "file %s: %s\n", path, hash);
 
        /* TODO check null */
        sqlite3 *db = zpm->db;
@@ -724,12 +786,10 @@ int zpm_import(struct zpm *zpm, char *path, uint32_t flags, char *hash) {
                if (rc != SQLITE_ROW) {
                        /* didn't find a row */
                        SQLERROR(sqlite3_errmsg(db));
-                       zpm_rollback(zpm);
                munmap(content, sbuf.st_size);
                        return 0;
                }
                haverow = 1;
-//             fprintf(stderr, "have row for hash\n");
                type = sqlite3_column_type(ifile, 0);
                if (type == SQLITE_NULL) {
                        /* TODO assert, this shouldn't be possible? */
@@ -757,70 +817,62 @@ int zpm_import(struct zpm *zpm, char *path, uint32_t flags, char *hash) {
                outbuf = compresslzma(content, sbuf.st_size, &outlen);
                if (!outbuf) {
                        fprintf(stderr, "compresslzma failed\n");
-               munmap(content, sbuf.st_size);
+                       munmap(content, sbuf.st_size);
                        return 0;
                }
-               //fprintf(stderr, "compressed to %zu\n", outlen);
-
-               /* start a transaction */
-               // do that outside of here 
-               //zpm_begin(zpm);
 
                /* insert */
                if (haverow) {
-                       //fprintf(stderr, "adding file data\n");
-                       rc = sqlite3_prepare(db, "update files set size = ?, content = ? where hash = ?", -1, &ifile,0);
+                       rc = sqlite3_prepare_v2(db, "update files set size = ?, content = ? where hash = ?", -1, &ifile,0);
                } else {
-                       //fprintf(stderr, "creating new data row\n");
-                       rc = sqlite3_prepare(db, "insert into files (size, content, hash) values (?,?,?)", -1, &ifile,0);
+                       rc = sqlite3_prepare_v2(db, "insert into files (size, content, hash) values (?,?,?)", -1, &ifile,0);
                }
+
                if (rc != SQLITE_OK) {
                        SQLERROR(sqlite3_errmsg(db));
                        fprintf(stderr, "cant prepare data\n");
-                       zpm_rollback(zpm);
-               munmap(content, sbuf.st_size);
+                       munmap(content, sbuf.st_size);
                        return 0;
                }
 
-               sqlite3_bind_int64(ifile, 1, (sqlite3_int64)sbuf.st_size);
+               rc = sqlite3_bind_int64(ifile, 1, (sqlite3_int64)sbuf.st_size);
                if (rc != SQLITE_OK) {
                        SQLERROR(sqlite3_errmsg(db));
+                       sqlite3_finalize(ifile);
                        fprintf(stderr, "cant bind size\n");
-                       zpm_rollback(zpm);
-               munmap(content, sbuf.st_size);
+                       munmap(content, sbuf.st_size);
                        return 0;
                }
-               sqlite3_bind_blob64(ifile, 2, outbuf, (sqlite3_int64)outlen, SQLITE_STATIC);
+
+               rc = sqlite3_bind_blob64(ifile, 2, outbuf,
+                               (sqlite3_int64)outlen, SQLITE_STATIC);
                if (rc != SQLITE_OK) {
                        SQLERROR(sqlite3_errmsg(db));
+                       sqlite3_finalize(ifile);
                        fprintf(stderr, "cant bind content\n");
-                       zpm_rollback(zpm);
-               munmap(content, sbuf.st_size);
+                       munmap(content, sbuf.st_size);
                        return 0;
                }
-               sqlite3_bind_text(ifile, 3, hash, 64, SQLITE_STATIC);
+
+               rc = sqlite3_bind_text(ifile, 3, hash, 64, SQLITE_STATIC);
                if (rc != SQLITE_OK) {
                        SQLERROR(sqlite3_errmsg(db));
                        fprintf(stderr, "cant bind hash\n");
-                       zpm_rollback(zpm);
-               munmap(content, sbuf.st_size);
+                       sqlite3_finalize(ifile);
+                       munmap(content, sbuf.st_size);
                        return 0;
                }
+
                rc = sqlite3_step(ifile);
                if (rc != SQLITE_DONE) {
                        SQLERROR(sqlite3_errmsg(db));
                        sqlite3_finalize(ifile);
-                       zpm_rollback(zpm);
-               munmap(content, sbuf.st_size);
+                       munmap(content, sbuf.st_size);
                        return 0;
                }
                sqlite3_finalize(ifile);
 
-               /* commit */
-               //zpm_commit(zpm);
-
                /* don't need the original file now */
-
        }
 
        if (!set_elf_info(zpm->db, hash, content, sbuf.st_size)) {
@@ -831,65 +883,6 @@ int zpm_import(struct zpm *zpm, char *path, uint32_t flags, char *hash) {
 
        munmap(content, sbuf.st_size);
 
-       /* if package and not nopackage flag, add to package */
-       if (zpm->current_package->name && (!ZPM_NOPACKAGE)) {
-               /* TODO */
-       }
-
        /* return */
        return 1;
 }
-#endif
-
-#if 0
-int main(int ac, char **av){
-       sqlite3 *db = 0;
-       int rc;
-
-       int blobsize;
-       int64_t size;
-       void *xzdata;
-       int type;
-       FILE *out;
-       sqlite3_stmt *ifile;
-
-       char *hash;
-       char *filename;
-
-       if (ac < 3) {
-               fprintf(stderr, "usage: db hash file\n");
-               return 1;
-       }
-
-       rc = sqlite3_open(av[1], &db);
-       if (rc) {
-               SQLERROR(sqlite3_errmsg(db));
-               sqlite3_close(db);
-               return 1;
-       }
-
-}
-#endif
-
-#if 0
-Packages are sqlite databases
-
-get application id and userver
-
-Primitive operations:
-
-add path to repo
-associate path with package
-associate blob with path?
-add blob to repo
-* extract blob to a path
-compare blob to filesystem path
-create package with info
-
-Extra primitives:
-
-record elf information about blob
-compress blob
-uncompress blob
-sign a package?  What are we verifying?
-#endif