.

README

@@ -1,18 +1,5 @@
-depends: https://github.com/arp242/toml-c
+most development currently happens in ./pkin.
+# development is kinda stuck
+cause c does not support
+coroutines/concurrency/parallelism properly.
 
-expected usage:
-(1) pkg_add /path/to/source/code/with/template/file
-(2) pkg_add name of source template in source repo
-
-We need a template format that specifies compiletime
-dependencies in addition to the standart rpm spec fields
-such as name, description, build script, etc..
-In the case of (2), it must also specify an URL to get the
-source code from.
-
-in the end it should produce an rpm package and install it
-(with dnf). referenced packages(like in dependencies) should
-use the name from fedoras package list.
-If a source template depends on another package that only
-exists as a source template, pkg_add must make sure to
-compile that first.

pkin/asset/example.a

@@ -1,2 +1 @@
-lr	1.0	foo	http://localhost:8081/example.binpkg.tar
-asd	1.0	asd	http://kentoj/index.html
+lr	1.0	foo	http://localhost:8081/example.binpkg.tar	95f7a5fbfe6e126c88543b1291e031719d67bc28df6f9753b0a6fd891056500a

pkin/meson.build

@@ -9,6 +9,7 @@ project(
 cc = meson.get_compiler('c')
 deps = [
   cc.find_library('libowfat'),
+  cc.find_library('libbearssl'),
 ]
 
 add_project_arguments(

pkin/src/bin-internal/extraction-worker.c

@@ -42,11 +42,9 @@ int extract(char *in, const char *out)
 {
   struct archive *reader = NULL, *writer = NULL;
   struct archive_entry *ent;
+  stralloc path;
   int ret = 0;
   int r;
-  size_t l;
-  const char *oldpath;
-  char *newpath;
 
   reader = archive_read_new();
   archive_read_support_filter_all(reader);
@@ -68,13 +66,15 @@ int extract(char *in, const char *out)
       goto done;
     }
 
-    oldpath = archive_entry_pathname(ent);
-    newpath = alloca(str_len(oldpath) + str_len(out) + 1);
-    l = str_copy(newpath, out);
-    l += str_copy(newpath + l, "/");
-    str_copy(newpath + l, oldpath);
-    msg(oldpath, " -> ", newpath);
-    archive_entry_set_pathname(ent, newpath);
+    if (!stralloc_copys(&path, out)
+     || !stralloc_cats(&path, "/")
+     || !stralloc_cats(&path, archive_entry_pathname(ent))
+     || !stralloc_0(&path)
+    ) {
+      carpsys("append to stralloc");
+      goto done;
+    }
+    archive_entry_set_pathname(ent, path.s);
 
     if (archive_write_header(writer, ent) != 0) {
       carp("failed to write header ", errstr(writer));
@@ -100,6 +100,7 @@ done:
     archive_write_close(writer);
     archive_write_free(writer);
   }
+  stralloc_free(&path);
   return ret;
 }
 

pkin/src/bin/pkin-fetch.c

@@ -1,5 +1,6 @@
 #include <libowfat/errmsg.h>
 #include <libowfat/str.h>
+#include <libowfat/stralloc.h>
 #include <unistd.h>
 
 #include "../pkin.h"
@@ -11,44 +12,12 @@ static int find_package(char *name, pkin_pkgmeta *pkgmeta)
 {
   pkin_repo_iter iter;
   pkin_repo_iter_init(&iter);
-
   while (pkin_repo_iter_read(&iter, pkgmeta))
     if (str_equal(pkgmeta->name, name))
       return 1;
   return 0;
 }
 
-static void run(int argc, char **argv)
-{
-  int i;
-  pkin_pkgmeta pkgmeta;
-  pkin_queue fetchq, extractq;
-  stralloc archivename;
-  if (!pkin_queue_prepare(&fetchq)
-   || !pkin_queue_prepare(&extractq)
-  ) die(111, "failed to create queue");
-
-  for (i = 0; i < argc; i++) {
-    if (!find_package(argv[i], &pkgmeta))
-      die(100, "package '", argv[i], "' not found ");
-    stralloc_copys(&archivename, pkgmeta.name);
-    stralloc_cats(&archivename, ".archive");
-    stralloc_0(&archivename);
-    pkin_queue_fetch_add(&fetchq, pkgmeta.url, archivename.s);
-    pkin_queue_extract_add(&extractq, archivename.s, pkgmeta.name);
-    if (pkin_verbose)
-      msg("queueing fetch/extract: ", pkgmeta.url);
-  }
-  stralloc_free(&archivename);
-
-  msg("fetching binary packages");
-  if (!pkin_queue_fetch_start(&fetchq))
-    die(111, "failed fetching packages");
-  msg("extracting fetched packages");
-  if (!pkin_queue_extract_start(&extractq))
-    die(111, "failed extracting packages");
-}
-
 void command_fetch(int argc, char **argv)
 {
   int i;
@@ -63,5 +32,5 @@ void command_fetch(int argc, char **argv)
   argc -= i;
   argv += i;
 
-  run(argc, argv);
+  //run(argc, argv);
 }

pkin/src/pkin.h

@@ -8,8 +8,8 @@
 #include <libowfat/stralloc.h>
 #include <libowfat/array.h>
 #include <libowfat/buffer.h>
+#include <bearssl_hash.h>
 #include <limits.h>
-#include <jansson.h>
 
 #define PKIN_PKGMETA_NAME_MAX 128
 #define PKIN_PKGMETA_DESCR_MAX 256
@@ -25,6 +25,7 @@ typedef struct {
   char descr[PKIN_PKGMETA_DESCR_MAX];
   char version[PKIN_PKGMETA_VERSION_MAX];
   char url[PKIN_PKGMETA_URL_MAX]; /* url to download binary package from */
+  char sha256sum[br_sha256_SIZE];
 } pkin_pkgmeta;
 
 typedef struct {
@@ -56,10 +57,14 @@ typedef struct {
 } pkin_queue;
 int pkin_queue_prepare(pkin_queue *queue);
 
+#define pkin_queue_fetch_prepare(q) pkin_queue_prepare(q)
 void pkin_queue_fetch_add(pkin_queue *fetchqueue, char *url, char *output);
 int pkin_queue_fetch_start(pkin_queue *fetchqueue);
 
+#define pkin_queue_extract_prepare(q) pkin_queue_prepare(q)
 void pkin_queue_extract_add(pkin_queue *extractqueue, char *src, char *dest);
 int pkin_queue_extract_start(pkin_queue *extractqueue);
 
+int pkin_fetch_and_install(array *pkgmetas);
+
 #endif

pkin/src/pkin/pkin_fetch_and_install.c

@@ -0,0 +1,170 @@
+#include <asm-generic/errno-base.h>
+#include <bearssl_hash.h>
+#include <libowfat/array.h>
+#include <libowfat/buffer.h>
+#include <libowfat/byte.h>
+#include <libowfat/errmsg.h>
+#include <libowfat/str.h>
+#include <libowfat/stralloc.h>
+#include <libowfat/open.h>
+#include <unistd.h>
+
+#include "../pkin.h"
+
+static int get_cache_path(stralloc *sa, pkin_pkgmeta *pkgmeta)
+{
+    if (!stralloc_copys(sa, PATH_CACHE)
+     || !stralloc_cats(sa, "/")
+     || !stralloc_cats(sa, pkgmeta->name)
+     || !stralloc_cats(sa, "-")
+     || !stralloc_cats(sa, pkgmeta->version)
+     || !stralloc_cats(sa, ".pkinpkg")
+     || !stralloc_0(sa)
+    ) return 0;
+    return 1;
+}
+
+static int verify_checksum(pkin_pkgmeta *pkgmeta, int fd)
+{
+  br_sha256_context ctx;
+  char buf[8192];
+  int r;
+
+  for(;;) {
+    r = read(fd, buf, sizeof(buf));
+    if (r == 0) break;
+    if (r < 0) { close(fd); return 0; }
+    br_sha224_update(&ctx, buf, r);
+  }
+
+  char out[br_sha256_SIZE];
+  br_sha256_out(&ctx, out);
+  return byte_diff(out, br_sha256_SIZE, pkgmeta->sha256sum) == 0;
+}
+
+static int fetch_all(array *pkgmetas)
+{
+  array pkgbindirs;
+  char pkgbindir[] = PATH_TMP"/pkin.XXXXX";
+  pkin_queue queue;
+  int success, i, len;
+  stralloc path;
+  pkin_pkgmeta *pkgmeta;
+  success = 0;
+  if (!pkin_queue_fetch_prepare(&queue)) {
+    carpsys("prepare queue");
+    goto fetch_out;
+  }
+
+  /* add all pkgmetas with no valid cache entry to fetch-queue */
+  len = array_length(pkgmetas, sizeof(pkin_pkgmeta));
+  for (i = 0; i < len; i++) {
+    pkgmeta = array_get(pkgmetas, sizeof(pkin_pkgmeta), i);
+    if (!get_cache_path(&path, pkgmeta)) {
+      carpsys("append to stralloc");
+      goto fetch_out;
+    }
+    
+  }
+
+  /* actually fetch files */
+  if (!pkin_queue_fetch_start(&queue)) {
+    carpsys("failed to fetch some packages");
+    goto fetch_out;
+  }
+
+  /* verify checksums */
+  for (i = 0; i < len; i++) {
+    pkgmeta = array_get(pkgmetas, sizeof(pkin_pkgmeta), i);
+    if (!get_cache_path(&path, pkgmeta)) {
+      carpsys("append to stralloc");
+      goto fetch_out;
+    }
+    fd = open_read(path.s);
+    if (fd < 0) {
+      carpsys("open_read ", path.s, "(fetched from ", pkgmeta->url, ")");
+      goto fetch_out;
+    }
+    if (!verify_checksum(pkgmeta, fd)) {
+      carpsys("Checksum mismatch for ", path.s, " from ", pkgmeta->url);
+      goto fetch_out;
+    }
+    close(fd);
+  }
+
+  success = 1;
+fetch_out:
+  stralloc_free(&path);
+  return success;
+}
+
+static int extract_all(array *pkgmetas)
+{
+  pkin_queue queue;
+  int success, i, len;
+  stralloc path;
+  pkin_pkgmeta *pkgmeta;
+  success = 0;
+  if (!pkin_queue_extract_prepare(&queue)) {
+    carpsys("prepare queue");
+    goto extract_out;
+  }
+
+  char binpkgdir[] = "/tmp/pkin.XXXXX";
+
+  len = array_length(pkgmetas, sizeof(pkin_pkgmeta));
+  for (i = 0; i < len; i++) {
+    pkgmeta = array_get(pkgmetas, sizeof(pkin_pkgmeta), i);
+    if (!get_cache_path(&path, pkgmeta)) {
+      carpsys("append to stralloc");
+      goto extract_out;
+    }
+    pkin_queue_extract_add(&queue, path.s, );
+  }
+
+  if (!pkin_queue_extract_start(&queue)) {
+    carpsys("failed to fetch package");
+    goto extract_out;
+  }
+
+  success = 1;
+extract_out:
+  stralloc_free(&path);
+  return success;
+}
+
+static int install(pkin_pkgmeta *pkgmeta, char *binkpgdir)
+{
+}
+
+static void run(int argc, char **argv)
+{
+  int i;
+  pkin_pkgmeta pkgmeta;
+  pkin_queue fetchq, extractq;
+  stralloc archive_part, archive;
+  if (!pkin_queue_fetch_prepare(&fetchq)
+   || !pkin_queue_extract_prepare(&extractq)
+  ) die(111, "failed to create queue");
+
+  for (i = 0; i < argc; i++) {
+    if (!find_package(argv[i], &pkgmeta))
+      die(100, "package '", argv[i], "' not found ");
+    if (!cache_part_path(&archive_part, &pkgmeta)
+     || !cache_completed_path(&archive, &pkgmeta)
+    ) diesys(111, "append to stralloc");
+
+    pkin_queue_fetch_add(&fetchq, pkgmeta.url, archive_part.s);
+    pkin_queue_extract_add(&extractq, archivename.s, pkgmeta.name);
+    if (pkin_verbose)
+      msg("queueing fetch/extract: ", pkgmeta.url);
+  }
+  stralloc_free(&archivename);
+
+  msg("fetching binary packages");
+  if (!pkin_queue_fetch_start(&fetchq))
+    die(111, "failed fetching packages");
+  msg("extracting fetched packages");
+  if (!pkin_queue_extract_start(&extractq))
+    die(111, "failed extracting packages");
+}

pkin/src/pkin/pkin_queue_fetch_start.c

@@ -21,7 +21,8 @@ int pkin_queue_fetch_start(pkin_queue *queue)
    * to not flood the terminal. It will still always send the
    * "Download Results"-report. */
   cmd = (char *[]){"aria2c", "--console-log-level=warn",
-      "--enable-color=false", "--allow-overwrite=true", "-i", "-", NULL};
+    "--enable-color=false", "--allow-overwrite=true", "--input-file=-",
+    "--dir=/", NULL};
   pid = pkin__spawn(cmd, queue->pipefd[0], 1, 2);
   if (pid < 0) {
     carp("failed spawning aria2c to fetch files");

pkin/src/pkin/pkin_repo_iter_read.c

@@ -1,3 +1,4 @@
+#include <bearssl_hash.h>
 #include <libowfat/array.h>
 #include <libowfat/buffer.h>
 #include <libowfat/errmsg.h>
@@ -23,9 +24,17 @@ static int parse_field(char *line, char *field, size_t fieldmax)
   return l;
 }
 
+static int hexval(char c) {
+    if (c>='0' && c<='9') return c-'0';
+    if (c>='a' && c<='f') return c-'a'+10;
+    if (c>='A' && c<='F') return c-'A'+10;
+    return -1;
+}
+
 static int parse_pkgmeta(char *line, pkin_pkgmeta *res)
 {
-  size_t l;
+  size_t l, i;
+  int high, low;
 
   l = parse_field(line, res->name, PKIN_PKGMETA_NAME_MAX);
   if (l == 0) goto skip;
@@ -41,10 +50,19 @@ static int parse_pkgmeta(char *line, pkin_pkgmeta *res)
 
   l = parse_field(line, res->url, PKIN_PKGMETA_URL_MAX);
   if (l == 0) goto skip;
+  line += l+1;
 
+  // TODO use bearssl length var
+  if (str_len(line) != 64) goto skip;
+  for (i = 0; i < 32; i++) {
+    high = hexval(line[i*2]);
+    low = hexval(line[i*2+1]);
+    if (high < 0 || low < 0) goto skip;
+    res->sha256sum[i] = (unsigned char)((high<<4)|low);
+  }
+  
   return 1;
 skip:
-  carp("skipping malformed pkgmeta: '", line, "'");
   return 0;
 }