]> pd.if.org Git - zpackage/blobdiff - lib/zpm.c
add elf dependency tracking
[zpackage] / lib / zpm.c
index 4ffe0d3d89856618da5f2c86296604f2e5345e2c..9d62ad7d7debb32172cb4ee50299c01f7161a467 100644 (file)
--- a/lib/zpm.c
+++ b/lib/zpm.c
@@ -1,3 +1,5 @@
+#define _POSIX_C_SOURCE 200809L
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -9,8 +11,10 @@
 #include <errno.h>
 
 #include "zpm.h"
+#include "elf.h"
 
 #include "sha256.h"
+
 #if 0
 struct zpm {
        sqlite3 *db;
@@ -261,11 +265,14 @@ static
 #include "newdb.c"
 
 int zpm_db_initialize(struct zpm *pkg) {
-       fprintf(stderr, "initializing zpm database\n");
-       switch (sqlite3_exec(pkg->db, createdb, (int (*)(void *,int,char **,char **))0, NULL, NULL)) {
+       //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;
                default:
                        SQLERROR(sqlite3_errmsg(pkg->db));
+                       fprintf(stderr, "error: %s\n", error);
+                       sqlite3_free(error);
                        return 0;
                        break;
        }
@@ -298,7 +305,7 @@ int zpm_open(struct zpm *pkg, char *path) {
        appid = zpm_db_pragma(pkg, 1);
        dbver = zpm_db_pragma(pkg, 2);
 
-       fprintf(stderr, "db appid = %x, dbver = %d\n", appid, dbver);
+       //fprintf(stderr, "db appid = %x, dbver = %d\n", appid, dbver);
        switch (appid) {
                case 0: if (!zpm_db_initialize(pkg)) {
                                sqlite3_close(db);
@@ -342,11 +349,37 @@ int zpm_close(struct zpm *pkg) {
        return 1;
 }
 
+/* set package struct variables, database, environment, then command line */
+int zpm_readopts(struct zpm *pkg, int ac, char **av) {
+       char *ev;
+
+       if (!pkg) {
+               return -1;
+       }
+
+       ev = getenv("ZPMPACKAGE");
+       if (ev) {
+               pkg->pkgname = dupstr(ev);
+       }
+       ev = getenv("ZPMPKGREL");
+       if (ev) {
+               pkg->release = strtol(ev, 0, 0);
+       }
+       ev = getenv("ZPMPKGVER");
+       if (ev) {
+               pkg->version = dupstr(ev);
+       }
+
+       /* now, parse the options, return optind so the caller can adjust if needed */
+
+       return 1;
+}
+
 int zpm_extract(struct zpm *pkg, char *hash, char *path, int mode) {
        int rc;
 
        int blobsize;
-       int64_t size;
+       //int64_t size;
        void *xzdata;
        int type;
        FILE *out;
@@ -397,7 +430,7 @@ int zpm_extract(struct zpm *pkg, char *hash, char *path, int mode) {
                sqlite3_close(db);
                return 0;
        }
-       size = sqlite3_column_int64(ifile, 0);
+       //size = sqlite3_column_int64(ifile, 0);
        xzdata = (void *)sqlite3_column_blob(ifile, 1);
        blobsize = sqlite3_column_bytes(ifile, 1);
 
@@ -410,7 +443,7 @@ int zpm_extract(struct zpm *pkg, char *hash, char *path, int mode) {
        }
        //fwrite(xzdata, blobsize, 1, stdout);
 
-       fprintf(stderr, "uncompressing %d bytes at %p, expect %lld\n", blobsize, xzdata, (long long int)size);
+       //fprintf(stderr, "uncompressing %d bytes at %p, expect %lld\n", blobsize, xzdata, (long long int)size);
        uncompresslzma(xzdata, blobsize, out);
        fclose(out);
 
@@ -420,6 +453,237 @@ int zpm_extract(struct zpm *pkg, char *hash, char *path, int mode) {
        
 }
 
+/* flags 0, close mmap, flags 1, return mmap fd */
+int zpm_hash(char *path, char *hash, uint32_t flags) {
+       int fd;
+       void *content;
+       struct stat sbuf;
+       hash_state md;
+       int j;
+       unsigned char tmp[32];
+
+       /* mmap the file */
+       fd = open(path, O_RDONLY);
+       if (fd == -1) {
+               fprintf(stderr, "%s can't open %s: %s\n", __FUNCTION__, path,strerror(errno));
+               return 0;
+       }
+       if (fstat(fd, &sbuf) == -1) {
+               fprintf(stderr, "%s can't fstat %s: %s\n", __FUNCTION__, path,strerror(errno));
+               return 0;
+       }
+       /* not a regular file? */
+       if (!S_ISREG(sbuf.st_mode)) {
+               /* TODO this is ok, just stored differently */
+               fprintf(stderr, "%s non-regular files unsupported %s\n", __FUNCTION__, path);
+               return 0;
+       }
+
+       content = mmap(0, sbuf.st_size, PROT_READ,MAP_PRIVATE, fd, 0);
+       close(fd);
+       if (!content) {
+               fprintf(stderr, "%s can't mmap %s: %s\n", __FUNCTION__, path,strerror(errno));
+               return 0;
+       }
+
+       /* get hash */
+       sha256_init(&md);
+       sha256_process(&md, content, sbuf.st_size);
+       sha256_done(&md, tmp);
+       for (j=0;j<32;j++) {
+               sprintf(hash+j*2, "%02x", (unsigned)tmp[j]);
+       }
+       hash[64] = 0;
+       munmap(content, sbuf.st_size);
+       return 1;
+}
+
+static sqlite3_stmt *run_for_hash(sqlite3 *db, char *sql, char *hash) {
+       int rc;
+       sqlite3_stmt *ifile;
+
+       rc = sqlite3_prepare_v2(db, sql, -1, &ifile, 0);
+       if (rc != SQLITE_OK) {
+               SQLERROR(sqlite3_errmsg(db));
+               return 0;
+       }
+
+       /* hash, filename */
+
+       sqlite3_bind_text(ifile, 1, hash, 64, SQLITE_STATIC);
+
+       return ifile;
+}
+
+static int set_elf_info(sqlite3 *db, char *hash, char *content, size_t length) {
+       if (length >= sizeof (Elf64_Ehdr) && libelf_iself(content)) {
+               char *strtab;
+               Elf64_Dyn *dyn;
+               int i;
+               Elf64_Phdr *phdr;
+               Elf64_Ehdr *hdr;
+               sqlite3_stmt *ifile;
+               int rc;
+
+               /* go ahead and set up elf information now */
+               /* clear existing for this hash */
+               ifile = run_for_hash(db, "delete from elfinfo where file = ?", hash);
+               do {
+                       rc = sqlite3_step(ifile);
+#if 0
+                       if (rc == SQLITE_ROW) {
+                               int nc;
+                               fprintf(stderr, "delete row has %d columns: ", sqlite3_column_count(ifile));
+                               nc = sqlite3_column_count(ifile);
+                               for (i = 0; i < nc; i++) {
+                                       char *r;
+                                       r = sqlite3_column_text(ifile, i);
+                                       fprintf(stderr, ", %s", r);
+                               }
+                               fprintf(stderr, "\n");
+                       }
+#endif
+               } while (rc == SQLITE_ROW);
+               if (rc != SQLITE_DONE) {
+                       SQLERROR(sqlite3_errmsg(db));
+                       sqlite3_finalize(ifile);
+                       fprintf(stderr, "error clearing elf info: %d\n", rc);
+                       return 0;
+               }
+               sqlite3_finalize(ifile);
+               ifile = run_for_hash(db, "delete from elflibraries where file = ?", hash);
+               do {
+                       rc = sqlite3_step(ifile);
+               } while (rc == SQLITE_ROW);
+               if (rc != SQLITE_DONE) {
+                       SQLERROR(sqlite3_errmsg(db));
+                       sqlite3_finalize(ifile);
+                       fprintf(stderr, "error clearing elf library: %d\n", rc);
+                       return 0;
+               }
+               sqlite3_finalize(ifile);
+               ifile = run_for_hash(db, "delete from elfneeded where file = ?", hash);
+               do {
+                       rc = sqlite3_step(ifile);
+               } while (rc == SQLITE_ROW);
+               if (rc != SQLITE_DONE) {
+                       SQLERROR(sqlite3_errmsg(db));
+                       sqlite3_finalize(ifile);
+                       fprintf(stderr, "error clearing elf needed\n");
+                       return 0;
+               }
+               sqlite3_finalize(ifile);
+
+               hdr = libelf_header(content);
+               /* if lib, set soname */
+               if (libelf_type(content) == ET_DYN) {
+                       char *elf;
+                       Elf64_Shdr *shdr, *dynsect, *dynstrtab = 0;
+
+                       elf = (char *)content;
+                       for (i = 0; i < hdr->e_shnum; i++) {
+                               shdr = (Elf64_Shdr *)(elf + hdr->e_shoff + i * hdr->e_shentsize);
+                               if (shdr->sh_type == SHT_DYNAMIC) {
+                                       dynsect = shdr;
+                               } else if (shdr->sh_type == SHT_STRTAB && i == hdr->e_shstrndx) {
+                                       dynstrtab = shdr;
+                               }
+                       }
+                       if (!dynstrtab) {
+                               exit(8);
+                       }
+                       if (!dynsect) {
+                               exit(9);
+                       }
+
+                       char *name;
+                       Elf64_Shdr *dyntab;
+                       name = elf + dynstrtab->sh_offset;
+                       for (i = 0; i < hdr->e_shnum; i++) {
+                               shdr = (Elf64_Shdr *)(elf + hdr->e_shoff + i * hdr->e_shentsize);
+                               if (shdr->sh_type == SHT_STRTAB && !strcmp(".dynstr", name+shdr->sh_name)) {
+                                       dyntab = shdr;
+                               }
+                       }
+                       if (!dyntab) {
+                               exit(10);
+                       }
+
+                       char *dynname;
+                       Elf64_Dyn *dent;
+                       dynname = elf + dyntab->sh_offset;
+
+                       for (dent = (Elf64_Dyn *)(elf + dynsect->sh_offset); dent->d_tag != DT_NULL; dent++) {
+                               if (dent->d_tag == DT_SONAME) {
+                                       char *soname = dynname + dent->d_un.d_val;
+                                       sqlite3_prepare_v2(db, "insert into elflibraries (file,soname) values (?,?)",-1, &ifile, 0);
+                                       sqlite3_bind_text(ifile,1,hash,64,SQLITE_STATIC);
+                                       sqlite3_bind_text(ifile,2,soname,-1,SQLITE_STATIC);
+                                       rc = sqlite3_step(ifile);
+                                       if (rc != SQLITE_DONE) {
+                                               SQLERROR(sqlite3_errmsg(db));
+                                               sqlite3_finalize(ifile);
+                                               fprintf(stderr, "error setting library soname\n");
+                                               return 0;
+                                       }
+                                       sqlite3_finalize(ifile);
+                               }
+                       }
+               }
+
+               /* if exe, set neededs */
+               if (libelf_type(content) == ET_EXEC) {
+                       Elf64_Shdr *dsect;
+                       char *elf;
+
+                       elf = (char *)content;
+                       /* find program header table */
+                       for (i = 0; i < hdr->e_phnum; i++) {
+                               phdr = (Elf64_Phdr *)(elf + hdr->e_phoff + i * hdr->e_phentsize);
+                               if (phdr->p_type == PT_DYNAMIC) {
+                                       dsect = (Elf64_Shdr *)(elf + phdr->p_offset);
+                               }
+                       }
+                       dyn = (Elf64_Dyn *)(elf + dsect->sh_offset);
+                       if (!dyn) {
+                               exit(9);
+                       }
+                       dyn = (Elf64_Dyn *)dsect;
+
+                       dsect = libelf_section(elf, SHT_DYNAMIC);
+                       Elf64_Shdr *strsect;
+
+                       strsect = libelf_section_n(elf, dsect->sh_link);
+                       strtab = elf + strsect->sh_offset;
+
+                       sqlite3_prepare_v2(db, "insert into elfneeded (file,needed) values (?,?)",-1, &ifile, 0);
+                       sqlite3_bind_text(ifile,1,hash,64,SQLITE_STATIC);
+                       while (dyn->d_tag != DT_NULL) {
+                               if (dyn->d_tag == DT_NEEDED) {
+                                       char *need;
+                                       int rc;
+
+                                       need = strtab + dyn->d_un.d_val;
+                                       if (strlen(need) == 0) continue;
+                                       sqlite3_bind_text(ifile,2,need,strlen(need),SQLITE_STATIC);
+                                       fprintf(stderr, "%s needs %s\n", hash, need);
+                                       rc = sqlite3_step(ifile);
+                                       if (rc != SQLITE_DONE) {
+                                               SQLERROR(sqlite3_errmsg(db));
+                                               sqlite3_finalize(ifile);
+                                               fprintf(stderr, "error setting needed library\n");
+                                               return 0;
+                                       }
+                                       sqlite3_reset(ifile);
+                               }
+                               dyn++;
+                       }
+                       sqlite3_finalize(ifile);
+               }
+       }
+       return 1;
+}
+
 #if 1
 int zpm_import(struct zpm *pkg, char *path, uint32_t flags, char *hash) {
        int fd;
@@ -448,22 +712,37 @@ int zpm_import(struct zpm *pkg, char *path, uint32_t flags, char *hash) {
        /* mmap the file */
        fd = open(path, O_RDONLY);
        if (fd == -1) {
+               pkg->error = errno;
                fprintf(stderr, "%s can't open %s: %s\n", __FUNCTION__, path,strerror(errno));
                return 0;
        }
        if (fstat(fd, &sbuf) == -1) {
+               pkg->error = errno;
                fprintf(stderr, "%s can't fstat %s: %s\n", __FUNCTION__, path,strerror(errno));
                return 0;
        }
        /* not a regular file? */
        if (!S_ISREG(sbuf.st_mode)) {
+               char *ftype;
+               switch (sbuf.st_mode & S_IFMT) {
+                       case S_IFSOCK: ftype = "socket"; break;
+                       case S_IFLNK : ftype = "symlink"; break;
+                       case S_IFBLK : ftype = "block device"; break;
+                       case S_IFDIR : ftype = "directory"; break;
+                       case S_IFCHR : ftype = "character device"; break;
+                       case S_IFIFO : ftype = "fifo"; break;
+                       default: ftype = "unknown file type"; break;
+               }
                /* TODO this is ok, just stored differently */
-               fprintf(stderr, "%s non-regular files unsupported %s\n", __FUNCTION__, path);
+               fprintf(stderr, "%s can't import %s file: %s\n", __FUNCTION__, ftype, path);
+               pkg->error = EINVAL;
                return 0;
        }
 
        content = mmap(0, sbuf.st_size, PROT_READ,MAP_PRIVATE, fd, 0);
+       close(fd);
        if (!content) {
+               pkg->error = errno;
                fprintf(stderr, "%s can't mmap %s: %s\n", __FUNCTION__, path,strerror(errno));
                return 0;
        }
@@ -476,15 +755,17 @@ int zpm_import(struct zpm *pkg, 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);
+       //fprintf(stderr, "file %s: %s\n", path, hash);
 
-       /* prepare and bind */
        /* TODO check null */
        sqlite3 *db = pkg->db;
 
+       /* prepare and bind */
+
        rc = sqlite3_prepare_v2(db, "select size, content is not null from files where hash = ?", -1, &ifile,0);
        if (rc != SQLITE_OK) {
                SQLERROR(sqlite3_errmsg(db));
+               munmap(content, sbuf.st_size);
                return 0;
        }
 
@@ -499,6 +780,7 @@ int zpm_import(struct zpm *pkg, char *path, uint32_t flags, char *hash) {
                        /* didn't find a row */
                        SQLERROR(sqlite3_errmsg(db));
                        zpm_rollback(pkg);
+               munmap(content, sbuf.st_size);
                        return 0;
                }
                haverow = 1;
@@ -508,6 +790,7 @@ int zpm_import(struct zpm *pkg, char *path, uint32_t flags, char *hash) {
                        /* TODO assert, this shouldn't be possible? */
                        fprintf(stderr, "no file size\n");
                        sqlite3_finalize(ifile);
+               munmap(content, sbuf.st_size);
                        return 0;
                }
                type = sqlite3_column_type(ifile, 1);
@@ -515,6 +798,7 @@ int zpm_import(struct zpm *pkg, char *path, uint32_t flags, char *hash) {
                        /* TODO assert, this shouldn't be possible? */
                        fprintf(stderr, "no file data\n");
                        sqlite3_finalize(ifile);
+               munmap(content, sbuf.st_size);
                        return 0;
                        /* which is fine, just need to update the row then */
                }
@@ -528,12 +812,10 @@ int zpm_import(struct zpm *pkg, 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);
                        return 0;
                }
-               fprintf(stderr, "compressed to %zu\n", outlen);
-               /* don't need the original file now */
-               munmap(content, sbuf.st_size);
-               close(fd);
+               //fprintf(stderr, "compressed to %zu\n", outlen);
 
                /* start a transaction */
                // do that outside of here 
@@ -541,16 +823,17 @@ int zpm_import(struct zpm *pkg, char *path, uint32_t flags, char *hash) {
 
                /* insert */
                if (haverow) {
-                       fprintf(stderr, "adding file data\n");
+                       //fprintf(stderr, "adding file data\n");
                        rc = sqlite3_prepare(db, "update files set size = ?, content = ? where hash = ?", -1, &ifile,0);
                } else {
-                       fprintf(stderr, "creating new data row\n");
+                       //fprintf(stderr, "creating new data row\n");
                        rc = sqlite3_prepare(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(pkg);
+               munmap(content, sbuf.st_size);
                        return 0;
                }
 
@@ -559,6 +842,7 @@ int zpm_import(struct zpm *pkg, char *path, uint32_t flags, char *hash) {
                        SQLERROR(sqlite3_errmsg(db));
                        fprintf(stderr, "cant bind size\n");
                        zpm_rollback(pkg);
+               munmap(content, sbuf.st_size);
                        return 0;
                }
                sqlite3_bind_blob64(ifile, 2, outbuf, (sqlite3_int64)outlen, SQLITE_STATIC);
@@ -566,6 +850,7 @@ int zpm_import(struct zpm *pkg, char *path, uint32_t flags, char *hash) {
                        SQLERROR(sqlite3_errmsg(db));
                        fprintf(stderr, "cant bind content\n");
                        zpm_rollback(pkg);
+               munmap(content, sbuf.st_size);
                        return 0;
                }
                sqlite3_bind_text(ifile, 3, hash, 64, SQLITE_STATIC);
@@ -573,6 +858,7 @@ int zpm_import(struct zpm *pkg, char *path, uint32_t flags, char *hash) {
                        SQLERROR(sqlite3_errmsg(db));
                        fprintf(stderr, "cant bind hash\n");
                        zpm_rollback(pkg);
+               munmap(content, sbuf.st_size);
                        return 0;
                }
                rc = sqlite3_step(ifile);
@@ -580,6 +866,7 @@ int zpm_import(struct zpm *pkg, char *path, uint32_t flags, char *hash) {
                        SQLERROR(sqlite3_errmsg(db));
                        sqlite3_finalize(ifile);
                        zpm_rollback(pkg);
+               munmap(content, sbuf.st_size);
                        return 0;
                }
                sqlite3_finalize(ifile);
@@ -587,12 +874,17 @@ int zpm_import(struct zpm *pkg, char *path, uint32_t flags, char *hash) {
                /* commit */
                //zpm_commit(pkg);
 
-       } else {
                /* don't need the original file now */
+
+       }
+
+       if (!set_elf_info(pkg->db, hash, content, sbuf.st_size)) {
+               fprintf(stderr, "setting elf info failed\n");
                munmap(content, sbuf.st_size);
-               close(fd);
+               return 0;
        }
 
+       munmap(content, sbuf.st_size);
 
        /* if package and not nopackage flag, add to package */
        if (pkg->pkgname && (!ZPM_NOPACKAGE)) {