From: Michael Tremer Date: Tue, 5 Dec 2017 18:48:36 +0000 (+0000) Subject: Initial commit X-Git-Tag: 0.9.0~182 X-Git-Url: http://git.ipfire.org/?p=people%2Fms%2Flibloc.git;a=commitdiff_plain;h=46aded9aedd3d33d5e3f4d12478e43589c0e5424 Initial commit Signed-off-by: Michael Tremer --- 46aded9aedd3d33d5e3f4d12478e43589c0e5424 diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..6976980 --- /dev/null +++ b/.gitignore @@ -0,0 +1,14 @@ +*.log +*.o +*.tar.xz +.deps/ +.libs/ +Makefile +Makefile.in +/aclocal.m4 +/autom4te.cache +/build-aux +/config.* +/configure +/libtool +/stamp-h1 diff --git a/COPYING b/COPYING new file mode 100644 index 0000000..84bba36 --- /dev/null +++ b/COPYING @@ -0,0 +1,502 @@ + GNU LESSER GENERAL PUBLIC LICENSE + Version 2.1, February 1999 + + Copyright (C) 1991, 1999 Free Software Foundation, Inc. + 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + +[This is the first released version of the Lesser GPL. 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Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the + library `Frob' (a library for tweaking knobs) written by James Random Hacker. + + , 1 April 1990 + Ty Coon, President of Vice + +That's all there is to it! diff --git a/Makefile.am b/Makefile.am new file mode 100644 index 0000000..24ae1e7 --- /dev/null +++ b/Makefile.am @@ -0,0 +1,77 @@ +EXTRA_DIST = +CLEANFILES = +ACLOCAL_AMFLAGS = -I m4 ${ACLOCAL_FLAGS} +AM_MAKEFLAGS = --no-print-directory + +AM_CPPFLAGS = \ + -include $(top_builddir)/config.h \ + -DSYSCONFDIR=\""$(sysconfdir)"\" \ + -I${top_srcdir}/src + +AM_CFLAGS = ${my_CFLAGS} \ + -fvisibility=hidden \ + -ffunction-sections \ + -fdata-sections + +AM_LDFLAGS = \ + -Wl,--gc-sections \ + -Wl,--as-needed + +LIBLOC_CURRENT=0 +LIBLOC_REVISION=0 +LIBLOC_AGE=0 + +SED_PROCESS = \ + $(AM_V_GEN)$(MKDIR_P) $(dir $@) && $(SED) \ + -e 's,@VERSION\@,$(VERSION),g' \ + -e 's,@prefix\@,$(prefix),g' \ + -e 's,@exec_prefix\@,$(exec_prefix),g' \ + -e 's,@libdir\@,$(libdir),g' \ + -e 's,@includedir\@,$(includedir),g' \ + < $< > $@ || rm $@ + +pkgconfigdir = $(libdir)/pkgconfig + +%.pc: %.pc.in Makefile + $(SED_PROCESS) + +pkginclude_HEADERS = \ + src/loc/libloc.h + +lib_LTLIBRARIES = \ + src/libloc.la + +src_libloc_la_SOURCES =\ + src/libloc-private.h \ + src/libloc.c + +EXTRA_DIST += src/libloc.sym + +src_libloc_la_LDFLAGS = \ + $(AM_LDFLAGS) \ + -version-info $(LIBLOC_CURRENT):$(LIBLOC_REVISION):$(LIBLOC_AGE) \ + -Wl,--version-script=$(top_srcdir)/src/libloc.sym + +src_libloc_la_DEPENDENCIES = \ + ${top_srcdir}/src/libloc.sym + +pkgconfig_DATA = \ + src/libloc.pc + +EXTRA_DIST += \ + src/libloc.pc.in + +CLEANFILES += \ + src/libloc.pc + +TESTS = \ + src/test-libloc + +check_PROGRAMS = \ + src/test-libloc + +src_test_libloc_SOURCES = \ + src/test-libloc.c + +src_test_libloc_LDADD = \ + src/libloc.la diff --git a/autogen.sh b/autogen.sh new file mode 100755 index 0000000..16c0eb3 --- /dev/null +++ b/autogen.sh @@ -0,0 +1,27 @@ +#!/bin/sh + +set -e + +if [ -f .git/hooks/pre-commit.sample -a ! -f .git/hooks/pre-commit ] ; then + cp -p .git/hooks/pre-commit.sample .git/hooks/pre-commit && \ + chmod +x .git/hooks/pre-commit && \ + echo "Activated pre-commit hook." +fi + +autoreconf --install --symlink + +libdir() { + echo $(cd $1/$(gcc -print-multi-os-directory); pwd) +} + +args="--prefix=/usr \ +--sysconfdir=/etc \ +--libdir=$(libdir /usr/lib)" + +echo +echo "----------------------------------------------------------------" +echo "Initialized build system. For a common configuration please run:" +echo "----------------------------------------------------------------" +echo +echo "./configure CFLAGS='-g -O0' $args" +echo diff --git a/configure.ac b/configure.ac new file mode 100644 index 0000000..0c9b22a --- /dev/null +++ b/configure.ac @@ -0,0 +1,83 @@ +AC_PREREQ(2.60) +AC_INIT([libloc], + [0], + [michael.tremer@ipfire.org], + [libloc], + [https://www.ipfire.org/]) + +AC_CONFIG_SRCDIR([src/libloc.c]) +AC_CONFIG_AUX_DIR([build-aux]) +AM_INIT_AUTOMAKE([ + foreign + 1.11 + -Wall + -Wno-portability + silent-rules + tar-pax + no-dist-gzip + dist-xz + subdir-objects +]) +AC_PROG_CC_STDC +AC_USE_SYSTEM_EXTENSIONS +AC_SYS_LARGEFILE +AC_CONFIG_MACRO_DIR([m4]) +AM_SILENT_RULES([yes]) +LT_INIT([ + disable-static + pic-only +]) +AC_PREFIX_DEFAULT([/usr]) + +AC_PROG_SED +AC_PROG_MKDIR_P + +AC_ARG_ENABLE([debug], + AS_HELP_STRING([--enable-debug], [enable debug messages @<:@default=disabled@:>@]), + [], [enable_debug=no]) +AS_IF([test "x$enable_debug" = "xyes"], [ + AC_DEFINE(ENABLE_DEBUG, [1], [Debug messages.]) +]) + +AC_CHECK_FUNCS([ \ + __secure_getenv \ + secure_getenv\ +]) + +my_CFLAGS="\ +-Wall \ +-Wchar-subscripts \ +-Wformat-security \ +-Wmissing-declarations \ +-Wmissing-prototypes \ +-Wnested-externs \ +-Wpointer-arith \ +-Wshadow \ +-Wsign-compare \ +-Wstrict-prototypes \ +-Wtype-limits \ +" +AC_SUBST([my_CFLAGS]) + +AC_CONFIG_HEADERS(config.h) +AC_CONFIG_FILES([ + Makefile +]) + +AC_OUTPUT +AC_MSG_RESULT([ + $PACKAGE $VERSION + ===== + + prefix: ${prefix} + sysconfdir: ${sysconfdir} + libdir: ${libdir} + includedir: ${includedir} + + compiler: ${CC} + cflags: ${CFLAGS} + ldflags: ${LDFLAGS} + + logging: ${enable_logging} + debug: ${enable_debug} +]) diff --git a/m4/.gitignore b/m4/.gitignore new file mode 100644 index 0000000..38066dd --- /dev/null +++ b/m4/.gitignore @@ -0,0 +1,5 @@ +libtool.m4 +ltoptions.m4 +ltsugar.m4 +ltversion.m4 +lt~obsolete.m4 diff --git a/src/.gitignore b/src/.gitignore new file mode 100644 index 0000000..a948ad3 --- /dev/null +++ b/src/.gitignore @@ -0,0 +1,8 @@ +.dirstamp +.deps/ +.libs/ +*.la +*.lo +*.trs +libloc.pc +test-libloc diff --git a/src/libloc-private.h b/src/libloc-private.h new file mode 100644 index 0000000..abfa59d --- /dev/null +++ b/src/libloc-private.h @@ -0,0 +1,57 @@ +/* + libloc - A library to determine the location of someone on the Internet + + Copyright (C) 2017 IPFire Development Team + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. +*/ + +#ifndef LIBLOC_PRIVATE_H +#define LIBLOC_PRIVATE_H + +#include +#include + +#include + +static inline void __attribute__((always_inline, format(printf, 2, 3))) +loc_log_null(struct loc_ctx *ctx, const char *format, ...) {} + +#define loc_log_cond(ctx, prio, arg...) \ + do { \ + if (loc_get_log_priority(ctx) >= prio) \ + loc_log(ctx, prio, __FILE__, __LINE__, __FUNCTION__, ## arg); \ + } while (0) + +#ifdef ENABLE_DEBUG +# define DEBUG(ctx, arg...) loc_log_cond(ctx, LOG_DEBUG, ## arg) +#else +# define DEBUG(ctx, arg...) loc_log_null(ctx, ## arg) +#endif + +#define INFO(ctx, arg...) loc_log_cond(ctx, LOG_INFO, ## arg) +#define ERROR(ctx, arg...) loc_log_cond(ctx, LOG_ERR, ## arg) + +#ifndef HAVE_SECURE_GETENV +# ifdef HAVE___SECURE_GETENV +# define secure_getenv __secure_getenv +# else +# error neither secure_getenv nor __secure_getenv is available +# endif +#endif + +#define LOC_EXPORT __attribute__ ((visibility("default"))) + +void loc_log(struct loc_ctx *ctx, + int priority, const char *file, int line, const char *fn, + const char *format, ...) __attribute__((format(printf, 6, 7))); + +#endif diff --git a/src/libloc.c b/src/libloc.c new file mode 100644 index 0000000..fe44b3c --- /dev/null +++ b/src/libloc.c @@ -0,0 +1,129 @@ +/* + libloc - A library to determine the location of someone on the Internet + + Copyright (C) 2017 IPFire Development Team + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. +*/ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include "libloc-private.h" + +struct loc_ctx { + int refcount; + void (*log_fn)(struct loc_ctx* ctx, + int priority, const char *file, int line, const char *fn, + const char *format, va_list args); + int log_priority; +}; + +void loc_log(struct loc_ctx* ctx, + int priority, const char* file, int line, const char* fn, + const char* format, ...) { + va_list args; + + va_start(args, format); + ctx->log_fn(ctx, priority, file, line, fn, format, args); + va_end(args); +} + +static void log_stderr(struct loc_ctx* ctx, + int priority, const char* file, int line, const char* fn, + const char* format, va_list args) { + fprintf(stderr, "libloc: %s: ", fn); + vfprintf(stderr, format, args); +} + +static int log_priority(const char* priority) { + char *endptr; + + int prio = strtol(priority, &endptr, 10); + + if (endptr[0] == '\0' || isspace(endptr[0])) + return prio; + + if (strncmp(priority, "err", 3) == 0) + return LOG_ERR; + + if (strncmp(priority, "info", 4) == 0) + return LOG_INFO; + + if (strncmp(priority, "debug", 5) == 0) + return LOG_DEBUG; + + return 0; +} + +LOC_EXPORT int loc_new(struct loc_ctx** ctx) { + struct loc_ctx* c = calloc(1, sizeof(*c)); + if (!c) + return -ENOMEM; + + c->refcount = 1; + c->log_fn = log_stderr; + c->log_priority = LOG_ERR; + + const char* env = secure_getenv("LOC_LOG"); + if (env) + loc_set_log_priority(c, log_priority(env)); + + INFO(c, "ctx %p created\n", c); + DEBUG(c, "log_priority=%d\n", c->log_priority); + *ctx = c; + + return 0; +} + +LOC_EXPORT struct loc_ctx* loc_ref(struct loc_ctx* ctx) { + if (!ctx) + return NULL; + + ctx->refcount++; + + return ctx; +} + +LOC_EXPORT struct loc_ctx* loc_unref(struct loc_ctx* ctx) { + if (!ctx) + return NULL; + + if (--ctx->refcount > 0) + return NULL; + + INFO(ctx, "context %p released\n", ctx); + free(ctx); + + return NULL; +} + +LOC_EXPORT void loc_set_log_fn(struct loc_ctx* ctx, + void (*log_fn)(struct loc_ctx* ctx, int priority, const char* file, + int line, const char* fn, const char* format, va_list args)) { + ctx->log_fn = log_fn; + INFO(ctx, "custom logging function %p registered\n", log_fn); +} + +LOC_EXPORT int loc_get_log_priority(struct loc_ctx* ctx) { + return ctx->log_priority; +} + +LOC_EXPORT void loc_set_log_priority(struct loc_ctx* ctx, int priority) { + ctx->log_priority = priority; +} diff --git a/src/libloc.pc.in b/src/libloc.pc.in new file mode 100644 index 0000000..52474c2 --- /dev/null +++ b/src/libloc.pc.in @@ -0,0 +1,11 @@ +prefix=@prefix@ +exec_prefix=@exec_prefix@ +libdir=@libdir@ +includedir=@includedir@ + +Name: libloc +Description: A library to determine the location of someone on the Internet +Version: @VERSION@ +Libs: -L${libdir} -lloc +Libs.private: +Cflags: -I${includedir} diff --git a/src/libloc.sym b/src/libloc.sym new file mode 100644 index 0000000..14dc126 --- /dev/null +++ b/src/libloc.sym @@ -0,0 +1,11 @@ +LIBLOC_1 { +global: + loc_ref; + loc_get_log_priority; + loc_set_log_fn; + loc_unref; + loc_set_log_priority; + loc_new; +local: + *; +}; diff --git a/src/loc/libloc.h b/src/loc/libloc.h new file mode 100644 index 0000000..6d9f2ac --- /dev/null +++ b/src/loc/libloc.h @@ -0,0 +1,42 @@ +/* + libloc - A library to determine the location of someone on the Internet + + Copyright (C) 2017 IPFire Development Team + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. +*/ + +#ifndef LIBLOC_H +#define LIBLOC_H + +#include + +#ifdef __cplusplus +extern "C" { +#endif + +struct loc_ctx; +struct loc_ctx *loc_ref(struct loc_ctx* ctx); +struct loc_ctx *loc_unref(struct loc_ctx* ctx); + +int loc_new(struct loc_ctx** ctx); +void loc_set_log_fn(struct loc_ctx* ctx, + void (*log_fn)(struct loc_ctx* ctx, + int priority, const char* file, int line, const char* fn, + const char* format, va_list args)); +int loc_get_log_priority(struct loc_ctx* ctx); +void loc_set_log_priority(struct loc_ctx* ctx, int priority); + +#ifdef __cplusplus +} /* extern "C" */ +#endif + +#endif diff --git a/src/test-libloc.c b/src/test-libloc.c new file mode 100644 index 0000000..fbbcfa0 --- /dev/null +++ b/src/test-libloc.c @@ -0,0 +1,39 @@ +/* + libloc - A library to determine the location of someone on the Internet + + Copyright (C) 2017 IPFire Development Team + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. +*/ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +int main(int argc, char** argv) { + struct loc_ctx *ctx; + + int err = loc_new(&ctx); + if (err < 0) + exit(EXIT_FAILURE); + + printf("version %s\n", VERSION); + + loc_unref(ctx); + return EXIT_SUCCESS; +}