/*******************************************************************/
/* slibtool: a skinny libtool implementation, written in C */
/* Copyright (C) 2016--2024 SysDeer Technologies, LLC */
/* Released under the Standard MIT License; see COPYING.SLIBTOOL. */
/*******************************************************************/
#include <slibtool/slibtool.h>
#include <slibtool/slibtool_output.h>
#include "slibtool_driver_impl.h"
#include "slibtool_ar_impl.h"
#include "slibtool_errinfo_impl.h"
#include "argv/argv.h"
#define SLBT_DRIVER_MODE_AR_ACTIONS (SLBT_DRIVER_MODE_AR_CHECK \
| SLBT_DRIVER_MODE_AR_MERGE)
#define SLBT_DRIVER_MODE_AR_OUTPUTS (SLBT_OUTPUT_ARCHIVE_MEMBERS \
| SLBT_OUTPUT_ARCHIVE_HEADERS \
| SLBT_OUTPUT_ARCHIVE_SYMBOLS \
| SLBT_OUTPUT_ARCHIVE_ARMAPS)
#define SLBT_PRETTY_FLAGS (SLBT_PRETTY_YAML \
| SLBT_PRETTY_POSIX \
| SLBT_PRETTY_HEXDATA)
static int slbt_ar_usage(
int fdout,
const char * program,
const char * arg,
const struct argv_option ** optv,
struct argv_meta * meta,
struct slbt_exec_ctx * ectx,
int noclr)
{
char header[512];
bool armode;
const char * dash;
armode = (dash = strrchr(program,'-'))
&& !strcmp(++dash,"ar");
snprintf(header,sizeof(header),
"Usage: %s%s [options] [ARCHIVE-FILE] [ARCHIVE_FILE] ...\n"
"Options:\n",
program,
armode ? "" : " --mode=ar");
switch (noclr) {
case 0:
slbt_argv_usage(fdout,header,optv,arg);
break;
default:
slbt_argv_usage_plain(fdout,header,optv,arg);
break;
}
if (ectx)
slbt_ectx_free_exec_ctx(ectx);
slbt_argv_free(meta);
return SLBT_USAGE;
}
static int slbt_exec_ar_fail(
struct slbt_exec_ctx * ectx,
struct argv_meta * meta,
int ret)
{
slbt_argv_free(meta);
slbt_ectx_free_exec_ctx(ectx);
return ret;
}
static int slbt_exec_ar_perform_archive_actions(
const struct slbt_driver_ctx * dctx,
struct slbt_archive_ctx ** arctxv)
{
struct slbt_archive_ctx ** arctxp;
struct slbt_archive_ctx * arctx;
bool farname;
switch (dctx->cctx->fmtflags & SLBT_PRETTY_FLAGS) {
case SLBT_PRETTY_POSIX:
farname = (arctxv[0] && arctxv[1]);
break;
default:
farname = true;
break;
}
for (arctxp=arctxv; *arctxp; arctxp++) {
if (dctx->cctx->fmtflags & SLBT_DRIVER_MODE_AR_OUTPUTS)
if (farname && (slbt_au_output_arname(*arctxp) < 0))
return SLBT_NESTED_ERROR(dctx);
if (dctx->cctx->fmtflags & SLBT_OUTPUT_ARCHIVE_MEMBERS)
if (slbt_au_output_members((*arctxp)->meta) < 0)
return SLBT_NESTED_ERROR(dctx);
if (dctx->cctx->fmtflags & SLBT_OUTPUT_ARCHIVE_SYMBOLS)
if (slbt_au_output_symbols((*arctxp)->meta) < 0)
return SLBT_NESTED_ERROR(dctx);
if (dctx->cctx->fmtflags & SLBT_OUTPUT_ARCHIVE_MAPFILE)
if (slbt_au_output_mapfile((*arctxp)->meta) < 0)
return SLBT_NESTED_ERROR(dctx);
}
if (dctx->cctx->fmtflags & SLBT_OUTPUT_ARCHIVE_DLSYMS)
if (slbt_au_output_dlsyms(arctxv,dctx->cctx->dlunit) < 0)
return SLBT_NESTED_ERROR(dctx);
if (dctx->cctx->drvflags & SLBT_DRIVER_MODE_AR_MERGE) {
if (slbt_ar_merge_archives(arctxv,&arctx) < 0)
return SLBT_NESTED_ERROR(dctx);
/* (defer mode to umask) */
if (slbt_ar_store_archive(arctx,dctx->cctx->output,0666) < 0)
return SLBT_NESTED_ERROR(dctx);
}
return 0;
}
int slbt_exec_ar(const struct slbt_driver_ctx * dctx)
{
int ret;
int fdout;
int fderr;
char ** argv;
char ** iargv;
struct slbt_exec_ctx * ectx;
struct slbt_driver_ctx_impl * ictx;
const struct slbt_common_ctx * cctx;
struct slbt_archive_ctx ** arctxv;
struct slbt_archive_ctx ** arctxp;
const char ** unitv;
const char ** unitp;
size_t nunits;
struct argv_meta * meta;
struct argv_entry * entry;
const struct argv_option * optv[SLBT_OPTV_ELEMENTS];
/* context */
if (slbt_ectx_get_exec_ctx(dctx,&ectx) < 0)
return SLBT_NESTED_ERROR(dctx);
/* initial state, ar mode skin */
slbt_ectx_reset_arguments(ectx);
slbt_disable_placeholders(ectx);
ictx = slbt_get_driver_ictx(dctx);
cctx = dctx->cctx;
iargv = ectx->cargv;
fdout = slbt_driver_fdout(dctx);
fderr = slbt_driver_fderr(dctx);
/* missing arguments? */
slbt_optv_init(slbt_ar_options,optv);
if (!iargv[1] && (dctx->cctx->drvflags & SLBT_DRIVER_VERBOSITY_USAGE))
return slbt_ar_usage(
fdout,
dctx->program,
0,optv,0,ectx,
dctx->cctx->drvflags & SLBT_DRIVER_ANNOTATE_NEVER);
/* <ar> argv meta */
if (!(meta = slbt_argv_get(
iargv,optv,
dctx->cctx->drvflags & SLBT_DRIVER_VERBOSITY_ERRORS
? ARGV_VERBOSITY_ERRORS
: ARGV_VERBOSITY_NONE,
fdout)))
return slbt_exec_ar_fail(
ectx,meta,
SLBT_CUSTOM_ERROR(dctx,SLBT_ERR_AR_FAIL));
/* dest, alternate argument vector options */
argv = ectx->altv;
*argv++ = iargv[0];
nunits = 0;
for (entry=meta->entries; entry->fopt || entry->arg; entry++) {
if (entry->fopt) {
switch (entry->tag) {
case TAG_AR_HELP:
slbt_ar_usage(
fdout,
dctx->program,
0,optv,0,ectx,
dctx->cctx->drvflags
& SLBT_DRIVER_ANNOTATE_NEVER);
ictx->cctx.drvflags |= SLBT_DRIVER_VERSION;
ictx->cctx.drvflags ^= SLBT_DRIVER_VERSION;
slbt_argv_free(meta);
return SLBT_OK;
case TAG_AR_VERSION:
ictx->cctx.drvflags |= SLBT_DRIVER_VERSION;
break;
case TAG_AR_CHECK:
ictx->cctx.drvflags |= SLBT_DRIVER_MODE_AR_CHECK;
break;
case TAG_AR_MERGE:
ictx->cctx.drvflags |= SLBT_DRIVER_MODE_AR_MERGE;
break;
case TAG_AR_OUTPUT:
ictx->cctx.output = entry->arg;
break;
case TAG_AR_PRINT:
if (!entry->arg)
ictx->cctx.fmtflags |= SLBT_OUTPUT_ARCHIVE_MEMBERS;
else if (!strcmp(entry->arg,"members"))
ictx->cctx.fmtflags |= SLBT_OUTPUT_ARCHIVE_MEMBERS;
else if (!strcmp(entry->arg,"headers"))
ictx->cctx.fmtflags |= SLBT_OUTPUT_ARCHIVE_HEADERS;
else if (!strcmp(entry->arg,"symbols"))
ictx->cctx.fmtflags |= SLBT_OUTPUT_ARCHIVE_SYMBOLS;
else if (!strcmp(entry->arg,"armaps"))
ictx->cctx.fmtflags |= SLBT_OUTPUT_ARCHIVE_ARMAPS;
break;
case TAG_AR_MAPFILE:
ictx->cctx.fmtflags |= SLBT_OUTPUT_ARCHIVE_MAPFILE;
break;
case TAG_AR_DLSYMS:
ictx->cctx.fmtflags |= SLBT_OUTPUT_ARCHIVE_DLSYMS;
break;
case TAG_AR_DLUNIT:
ictx->cctx.dlunit = entry->arg;
break;
case TAG_AR_NOSORT:
ictx->cctx.fmtflags |= SLBT_OUTPUT_ARCHIVE_NOSORT;
break;
case TAG_AR_REGEX:
ictx->cctx.regex = entry->arg;
break;
case TAG_AR_PRETTY:
if (!strcmp(entry->arg,"yaml")) {
ictx->cctx.fmtflags &= ~(uint64_t)SLBT_PRETTY_FLAGS;
ictx->cctx.fmtflags |= SLBT_PRETTY_YAML;
} else if (!strcmp(entry->arg,"posix")) {
ictx->cctx.fmtflags &= ~(uint64_t)SLBT_PRETTY_FLAGS;
ictx->cctx.fmtflags |= SLBT_PRETTY_POSIX;
}
break;
case TAG_AR_POSIX:
ictx->cctx.fmtflags &= ~(uint64_t)SLBT_PRETTY_FLAGS;
ictx->cctx.fmtflags |= SLBT_PRETTY_POSIX;
break;
case TAG_AR_YAML:
ictx->cctx.fmtflags &= ~(uint64_t)SLBT_PRETTY_FLAGS;
ictx->cctx.fmtflags |= SLBT_PRETTY_YAML;
break;
case TAG_AR_VERBOSE:
ictx->cctx.fmtflags |= SLBT_PRETTY_VERBOSE;
break;
}
if (entry->fval) {
*argv++ = (char *)entry->arg;
}
} else {
nunits++;
};
}
/* defer --version printing to slbt_main() as needed */
if (cctx->drvflags & SLBT_DRIVER_VERSION) {
slbt_argv_free(meta);
slbt_ectx_free_exec_ctx(ectx);
return SLBT_OK;
}
/* at least one action must be specified */
if (cctx->fmtflags & SLBT_DRIVER_MODE_AR_OUTPUTS) {
(void)0;
} else if (cctx->fmtflags & SLBT_OUTPUT_ARCHIVE_MAPFILE) {
(void)0;
} else if (cctx->fmtflags & SLBT_OUTPUT_ARCHIVE_DLSYMS) {
if (!cctx->dlunit) {
slbt_dprintf(fderr,
"%s: missing -Wdlunit: generation of a dlsyms vtable "
"requires the name of the dynamic library, executable "
"program, or dynamic module for which the vtable would "
"be generated.\n",
dctx->program);
return slbt_exec_ar_fail(
ectx,meta,
SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_DLUNIT_NOT_SPECIFIED));
}
} else if (!(cctx->drvflags & SLBT_DRIVER_MODE_AR_ACTIONS)) {
if (cctx->drvflags & SLBT_DRIVER_VERBOSITY_ERRORS)
slbt_dprintf(fderr,
"%s: at least one action must be specified\n",
dctx->program);
return slbt_exec_ar_fail(
ectx,meta,
SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_NO_ACTION_SPECIFIED));
}
/* -Wmerge without -Woutput? */
if ((cctx->drvflags & SLBT_DRIVER_MODE_AR_MERGE) && !cctx->output) {
if (cctx->drvflags & SLBT_DRIVER_VERBOSITY_ERRORS)
slbt_dprintf(fderr,
"%s: archive merging: output must be specified.\n",
dctx->program);
return slbt_exec_ar_fail(
ectx,meta,
SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_OUTPUT_NOT_SPECIFIED));
}
/* -Woutput without -Wmerge? */
if (cctx->output && !(cctx->drvflags & SLBT_DRIVER_MODE_AR_MERGE)) {
if (cctx->drvflags & SLBT_DRIVER_VERBOSITY_ERRORS)
slbt_dprintf(fderr,
"%s: output may only be specified "
"when merging one or more archives.\n",
dctx->program);
return slbt_exec_ar_fail(
ectx,meta,
SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_OUTPUT_NOT_APPLICABLE));
}
/* at least one unit must be specified */
if (!nunits) {
if (cctx->drvflags & SLBT_DRIVER_VERBOSITY_ERRORS)
slbt_dprintf(fderr,
"%s: all actions require at least one input unit\n",
dctx->program);
return slbt_exec_ar_fail(
ectx,meta,
SLBT_CUSTOM_ERROR(
dctx,
SLBT_ERR_AR_NO_INPUT_SPECIFIED));
}
/* archive vector allocation */
if (!(arctxv = calloc(nunits+1,sizeof(struct slbt_archive_ctx *))))
return slbt_exec_ar_fail(
ectx,meta,
SLBT_SYSTEM_ERROR(dctx,0));
/* unit vector allocation */
if (!(unitv = calloc(nunits+1,sizeof(const char *)))) {
free (arctxv);
return slbt_exec_ar_fail(
ectx,meta,
SLBT_SYSTEM_ERROR(dctx,0));
}
/* unit vector initialization */
for (entry=meta->entries,unitp=unitv; entry->fopt || entry->arg; entry++)
if (!entry->fopt)
*unitp++ = entry->arg;
/* archive context vector initialization */
for (unitp=unitv,arctxp=arctxv; *unitp; unitp++,arctxp++) {
if (slbt_ar_get_archive_ctx(dctx,*unitp,arctxp) < 0) {
for (arctxp=arctxv; *arctxp; arctxp++)
slbt_ar_free_archive_ctx(*arctxp);
free(unitv);
free(arctxv);
return slbt_exec_ar_fail(
ectx,meta,
SLBT_NESTED_ERROR(dctx));
}
}
/* archive operations */
ret = slbt_exec_ar_perform_archive_actions(dctx,arctxv);
/* all done */
for (arctxp=arctxv; *arctxp; arctxp++)
slbt_ar_free_archive_ctx(*arctxp);
free(unitv);
free(arctxv);
slbt_argv_free(meta);
slbt_ectx_free_exec_ctx(ectx);
return ret;
}