First steps for libapk

.gitignore

@@ -2,3 +2,4 @@ apk
 *.o
 *.d
 *.cmd
+*.so

Make.rules

@@ -70,7 +70,7 @@ INSTALL		:= install
 INSTALLDIR	:= $(INSTALL) -d
 
 CFLAGS		?= -g -O2
-CFLAGS_ALL	:= -Werror -Wall -Wstrict-prototypes -D_GNU_SOURCE -std=gnu99
+CFLAGS_ALL	:= -Werror -Wall -Wstrict-prototypes -D_GNU_SOURCE -std=gnu99 -fPIC
 CFLAGS_ALL	+= $(CFLAGS)
 
 LDFLAGS		?= -g
@@ -196,6 +196,24 @@ $(obj)/%.o: override local-target-prereqs=%
 $(obj)/%.o: $(src)/%.c FORCE
 	$(call if_changed_rule,cc_o_c)
 
+#####
+# Link shared libraries
+#
+__shlibs := $(addprefix $(obj)/,$(sort $(shlibs-y)))
+shobjs	 := $(addprefix $(obj)/,$(sort $(foreach m,$(shlibs-y),$($(m)-objs)))) 
+
+# link shared library
+quiet_cmd_shlib	= LD -shared $@
+      cmd_shlib = $(CC) $(ld_flags) -shared -o $@ \
+      		  $(addprefix $(obj)/,$($(@F)-objs)) \
+		  $(LIBS) $(LIBS_$(@F))
+
+$(__shlibs): override local-target-prereqs=$(addprefix $(obj)/,$($(*F)-objs))
+
+$(__shlibs): $(obj)/%: $(shobjs) FORCE
+	$(call if_changed,shlib)
+
+targets += $(__shlibs) $(shobjs)
 #####
 # Link programs
 
@@ -256,7 +274,7 @@ ifeq ($(toplevelrun),yes)
 		\( -name '*.[oas]' -o -name '.*.cmd' -o -name '.*.d' \) \
 		-type f -print | xargs rm -f
 endif
-	$(Q)rm -rf $(addprefix $(obj)/,$(sort $(progs-y) $(progs-n) $(progs-)))
+	$(Q)rm -rf $(addprefix $(obj)/,$(sort $(progs-y) $(progs-n) $(progs-) $(shlibs-y) $(shlibs-n) $(shlibs-)))
 
 ifeq ($(origin VERSION),command line)
 DIST_VERSION=$(VERSION)

Makefile

@@ -9,11 +9,12 @@ VERSION := 2.0.3
 
 DESTDIR		:=
 SBINDIR		:= /sbin
+LIBDIR		:= /lib
 CONFDIR		:= /etc/apk
 MANDIR		:= /usr/share/man
 DOCDIR		:= /usr/share/doc/apk
 
-export DESTDIR SBINDIR CONFDIR MANDIR DOCDIR
+export DESTDIR SBINDIR LIBDIR CONFDIR MANDIR DOCDIR
 
 ##
 # Top-level rules and targets

src/Makefile

@@ -4,24 +4,34 @@ ifeq ($(shell pkg-config --print-errors --exists $(PKGDEPS) || echo fail),fail)
 $(error Build dependencies are not met)
 endif
 
+shlibs-y		+= libapk.so
+libapk.so-objs		:= common.o state.o database.o package.o archive.o \
+			   version.o io.o url.o gunzip.o blob.o hash.o print.o
+
 progs-y			+= apk
-apk-objs		:= common.o state.o database.o package.o archive.o \
-			   version.o io.o url.o gunzip.o blob.o hash.o apk.o \
-			   add.o del.o fix.o update.o info.o search.o upgrade.o \
-			   cache.o ver.o index.o fetch.o audit.o verify.o
+apk-objs		:= apk.o add.o del.o fix.o update.o info.o \
+			   search.o upgrade.o cache.o ver.o index.o fetch.o \
+			   audit.o verify.o
+
 CFLAGS			+= -D_ATFILE_SOURCE
 CFLAGS_apk.o		:= -DAPK_VERSION=\"$(FULL_VERSION)\"
+LIBS_apk		:= -lapk
 
 progs-$(STATIC)		+= apk.static
 apk.static-objs		:= $(apk-objs)
 LDFLAGS_apk.static	:= -static
-LDFLAGS_apk		+= -nopie
+LDFLAGS_apk		+= -nopie -L$(obj)
 
 CFLAGS			+= $(shell pkg-config --cflags $(PKGDEPS))
 LIBS			:= -Wl,--as-needed \
 				$(shell pkg-config --libs $(PKGDEPS)) \
 			   -Wl,--no-as-needed
 
-install:
-	$(INSTALLDIR) $(DESTDIR)$(SBINDIR)
+
+$(obj)/apk:	$(obj)/libapk.so
+
+install: $(obj)/apk $(obj)/libapk.so
+	$(INSTALLDIR) $(DESTDIR)$(SBINDIR) $(DESTDIR)$(LIBDIR)
 	$(INSTALL) $(obj)/apk $(DESTDIR)$(SBINDIR)
+	$(INSTALL) $(obj)/libapk.so $(DESTDIR)$(LIBDIR)
+

src/add.c

@@ -14,6 +14,7 @@
 #include "apk_applet.h"
 #include "apk_database.h"
 #include "apk_state.h"
+#include "apk_print.h"
 
 struct add_ctx {
 	const char *virtpkg;

src/apk.c

@@ -24,9 +24,7 @@
 #include "apk_database.h"
 #include "apk_applet.h"
 #include "apk_blob.h"
-
-int apk_verbosity = 1, apk_wait;
-unsigned int apk_flags = 0;
+#include "apk_print.h"
 
 static struct apk_option generic_options[] = {
 	{ 'h', "help",		"Show generic help or applet specific help" },
@@ -60,64 +58,12 @@ static struct apk_option generic_options[] = {
 	{ 0x111, "overlay-from-stdin", "Read list of overlay files from stdin" },
 };
 
-const char *apk_error_str(int error)
-{
-	if (error < 0)
-		error = -error;
-	switch (error) {
-	case ENOKEY:
-		return "UNTRUSTED signature";
-	case EKEYREJECTED:
-		return "BAD signature";
-	case EIO:
-		return "IO ERROR";
-	case EBADMSG:
-		return "BAD archive";
-	case ENOMSG:
-		return "archive does not contain expected data";
-	default:
-		return strerror(error);
-	}
-}
-
-void apk_log(const char *prefix, const char *format, ...)
-{
-	va_list va;
-
-	if (prefix != NULL)
-		fprintf(stderr, "%s", prefix);
-	va_start(va, format);
-	vfprintf(stderr, format, va);
-	va_end(va);
-	fprintf(stderr, "\n");
-}
-
 static int version(void)
 {
 	printf("apk-tools " APK_VERSION "\n");
 	return 0;
 }
 
-int apk_print_indented(struct apk_indent *i, apk_blob_t blob)
-{
-	static const int wrap_length = 80;
-
-	if (i->x + blob.len + 1 >= wrap_length) {
-		i->x = i->indent;
-		printf("\n%*s", i->indent - 1, "");
-	} else if (i->x+1 < i->indent) {
-		printf("%*s", i->indent - i->x - 1, "");
-	}
-	i->x += printf(" %.*s", blob.len, blob.ptr);
-	return 0;
-}
-
-void apk_print_indented_words(struct apk_indent *i, const char *text)
-{
-	apk_blob_for_each_segment(APK_BLOB_STR(text), " ",
-		(apk_blob_cb) apk_print_indented, i);
-}
-
 static int format_option(char *buf, size_t len, struct apk_option *o,
 			 const char *separator)
 {
@@ -289,7 +235,7 @@ int main(int argc, char **argv)
 	struct apk_applet *applet;
 	char short_options[256], *sopt;
 	struct option *opt, *all_options;
-	int r, optindex, num_options;
+	int r, optindex, num_options, apk_wait = 0;
 	void *ctx = NULL;
 	struct apk_repository_list *repo = NULL;
 	struct apk_database db;
@@ -410,7 +356,7 @@ int main(int argc, char **argv)
 		argv++;
 	}
 
-	r = apk_db_open(&db, &dbopts);
+	r = apk_db_open(&db, &dbopts, apk_wait);
 	if (r != 0) {
 		apk_error("Failed to open apk database: %s",
 			  apk_error_str(r));

src/apk_database.h

@@ -155,7 +155,7 @@ struct apk_db_file *apk_db_file_query(struct apk_database *db,
 				 APK_OPENF_NO_SCRIPTS |		\
 				 APK_OPENF_NO_WORLD)
 
-int apk_db_open(struct apk_database *db, struct apk_db_options *dbopts);
+int apk_db_open(struct apk_database *db, struct apk_db_options *dbopts, int apk_wait);
 void apk_db_close(struct apk_database *db);
 int apk_db_write_config(struct apk_database *db);
 int apk_db_run_triggers(struct apk_database *db);

src/apk_defines.h

@@ -47,7 +47,7 @@
         (type *)( (char *)__mptr - offsetof(type,member) );})
 #endif
 
-extern int apk_verbosity, apk_wait;
+extern int apk_verbosity;
 extern unsigned int apk_flags;
 
 #define APK_FORCE		0x0001
@@ -65,13 +65,6 @@ extern unsigned int apk_flags;
 #define APK_NO_NETWORK		0x1000
 #define APK_OVERLAY_FROM_STDIN	0x2000
 
-#define apk_error(args...)	do { apk_log("ERROR: ", args); } while (0)
-#define apk_warning(args...)	do { if (apk_verbosity > 0) { apk_log("WARNING: ", args); } } while (0)
-#define apk_message(args...)	do { if (apk_verbosity > 0) { apk_log(NULL, args); } } while (0)
-
-void apk_log(const char *prefix, const char *format, ...);
-const char *apk_error_str(int error);
-
 static inline size_t apk_calc_installed_size(size_t size)
 {
 	const size_t bsize = 4 * 1024;

src/apk_print.h

+/* apk_state.h - Alpine Package Keeper (APK)
+ *
+ * Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
+ * Copyright (C) 2008 Timo Teräs <timo.teras@iki.fi>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation. See http://www.gnu.org/ for details.
+ */
+
+#ifndef APK_PRINT_H
+#define APK_PRINT_H
+
+#include "apk_blob.h"
+
+#define apk_error(args...)	do { apk_log("ERROR: ", args); } while (0)
+#define apk_warning(args...)	do { if (apk_verbosity > 0) { apk_log("WARNING: ", args); } } while (0)
+#define apk_message(args...)	do { if (apk_verbosity > 0) { apk_log(NULL, args); } } while (0)
+
+void apk_log(const char *prefix, const char *format, ...);
+const char *apk_error_str(int error);
+
+int apk_print_indented(struct apk_indent *i, apk_blob_t blob);
+void apk_print_indented_words(struct apk_indent *i, const char *text);
+
+#endif

src/apk_state.h

@@ -43,4 +43,7 @@ int apk_state_lock_name(struct apk_state *state,
 			struct apk_name *name,
 			struct apk_package *newpkg);
 
+int apk_print_indented(struct apk_indent *i, apk_blob_t blob);
+void apk_print_indented_words(struct apk_indent *i, const char *text);
+
 #endif

src/archive.c

@@ -24,6 +24,7 @@
 #include <stdint.h>
 
 #include "apk_defines.h"
+#include "apk_print.h"
 #include "apk_archive.h"
 
 struct tar_header {

src/cache.c

@@ -19,6 +19,7 @@
 #include "apk_database.h"
 #include "apk_state.h"
 #include "apk_package.h"
+#include "apk_print.h"
 
 #define CACHE_CLEAN	BIT(0)
 #define CACHE_DOWNLOAD	BIT(1)

src/database.c

@@ -27,6 +27,10 @@
 #include "apk_state.h"
 #include "apk_applet.h"
 #include "apk_archive.h"
+#include "apk_print.h"
+
+int apk_verbosity = 1;
+unsigned int apk_flags = 0;
 
 const char * const apkindex_tar_gz = "APKINDEX.tar.gz";
 const char * const apk_index_gz = "APK_INDEX.gz";
@@ -1021,7 +1025,8 @@ static void handle_alarm(int sig)
 {
 }
 
-int apk_db_open(struct apk_database *db, struct apk_db_options *dbopts)
+int apk_db_open(struct apk_database *db, struct apk_db_options *dbopts, 
+		int apk_wait)
 {
 	const char *msg = NULL;
 	struct apk_repository_list *repo = NULL;

src/del.c

@@ -13,6 +13,7 @@
 #include "apk_applet.h"
 #include "apk_state.h"
 #include "apk_database.h"
+#include "apk_print.h"
 
 static int del_parse(void *ctx, struct apk_db_options *db,
 		     int optch, int optindex, const char *optarg)

src/fetch.c

@@ -20,6 +20,7 @@
 #include "apk_database.h"
 #include "apk_state.h"
 #include "apk_io.h"
+#include "apk_print.h"
 
 #define FETCH_RECURSIVE		1
 #define FETCH_STDOUT		2

src/fix.c

@@ -14,6 +14,7 @@
 #include "apk_applet.h"
 #include "apk_database.h"
 #include "apk_state.h"
+#include "apk_print.h"
 
 struct fix_ctx {
 	unsigned int reinstall : 1;

src/index.c

@@ -15,6 +15,7 @@
 
 #include "apk_applet.h"
 #include "apk_database.h"
+#include "apk_print.h"
 
 #define INDEX_OLD_FORMAT	0x10000
 

src/info.c

@@ -16,6 +16,7 @@
 #include "apk_package.h"
 #include "apk_database.h"
 #include "apk_state.h"
+#include "apk_print.h"
 
 struct info_ctx {
 	int (*action)(struct info_ctx *ctx, struct apk_database *db,

src/package.c

@@ -27,6 +27,7 @@
 #include "apk_package.h"
 #include "apk_database.h"
 #include "apk_state.h"
+#include "apk_print.h"
 
 void apk_pkg_format_plain(struct apk_package *pkg, apk_blob_t to)
 {

src/print.c

+/* state.c - Alpine Package Keeper (APK)
+ *
+ * Copyright (C) 2005-2008 Natanael Copa <n@tanael.org>
+ * Copyright (C) 2008 Timo Teräs <timo.teras@iki.fi>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation. See http://www.gnu.org/ for details.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <malloc.h>
+#include <errno.h>
+
+#include "apk_defines.h"
+#include "apk_print.h"
+
+int apk_print_indented(struct apk_indent *i, apk_blob_t blob)
+{
+	static const int wrap_length = 80;
+
+	if (i->x + blob.len + 1 >= wrap_length) {
+		i->x = i->indent;
+		printf("\n%*s", i->indent - 1, "");
+	}
+	i->x += printf(" %.*s", blob.len, blob.ptr);
+	return 0;
+}
+
+void apk_print_indented_words(struct apk_indent *i, const char *text)
+{
+	apk_blob_for_each_segment(APK_BLOB_STR(text), " ",
+		(apk_blob_cb) apk_print_indented, i);
+}
+
+const char *apk_error_str(int error)
+{
+	if (error < 0)
+		error = -error;
+	switch (error) {
+	case ENOKEY:
+		return "UNTRUSTED signature";
+	case EKEYREJECTED:
+		return "BAD signature";
+	case EIO:
+		return "IO ERROR";
+	case EBADMSG:
+		return "BAD archive";
+	case ENOMSG:
+		return "archive does not contain expected data";
+	default:
+		return strerror(error);
+	}
+}
+
+void apk_log(const char *prefix, const char *format, ...)
+{
+	va_list va;
+
+	if (prefix != NULL)
+		fprintf(stderr, "%s", prefix);
+	va_start(va, format);
+	vfprintf(stderr, format, va);
+	va_end(va);
+	fprintf(stderr, "\n");
+}
+