extern char **environ;
#include "verbose.h"
+#include "afm-launch-mode.h"
#include "afm-launch.h"
#include "secmgr-wrap.h"
+#define DEFAULT_TYPE "text/html"
+
+struct type_list {
+ struct type_list *next;
+ char type[1];
+};
+
+struct desc_list {
+ struct desc_list *next;
+ enum afm_launch_mode mode;
+ struct type_list *types;
+ char **execs[2];
+};
+
+struct launchparam {
+ int port;
+ const char *secret;
+ const char *datadir;
+ const char **master;
+ const char **slave;
+};
+
+struct confread {
+ const char *filepath;
+ FILE *file;
+ int lineno;
+ int index;
+ int length;
+ char buffer[4096];
+};
+
+struct desc_list *launchers = NULL;
+
+static gid_t groupid = 0;
+
+const char separators[] = " \t\n";
+
+static void dump_launchers()
+{
+ int j, k;
+ struct desc_list *desc;
+ struct type_list *type;
+
+ for (desc = launchers ; desc != NULL ; desc = desc->next) {
+ printf("mode %s\n", name_of_launch_mode(desc->mode));
+ for (type = desc->types ; type != NULL ; type = type->next)
+ printf("%s\n", type->type);
+ for ( j = 0 ; j < 2 ; j++)
+ if (desc->execs[j] != NULL) {
+ for (k = 0 ; desc->execs[j][k] != NULL ; k++)
+ printf(" %s", desc->execs[j][k]);
+ printf("\n");
+ }
+ printf("\n");
+ }
+}
+
+static int next_token(struct confread *cread)
+{
+ cread->index += cread->length + strspn(&cread->buffer[cread->index + cread->length], separators);
+ cread->length = strcspn(&cread->buffer[cread->index], separators);
+ return cread->length;
+}
+
+static int read_line(struct confread *cread)
+{
+ while (fgets(cread->buffer, sizeof cread->buffer, cread->file) != NULL) {
+ cread->lineno++;
+ cread->index = strspn(cread->buffer, separators);
+ if (cread->buffer[cread->index] && cread->buffer[cread->index] != '#') {
+ cread->length = strcspn(&cread->buffer[cread->index], separators);
+ assert(cread->length > 0);
+ return cread->length;
+ }
+ }
+ if (ferror(cread->file)) {
+ ERROR("%s:%d: error while reading, %m", cread->filepath, cread->lineno);
+ return -1;
+ }
+ return 0;
+}
+
+static char **read_vector(struct confread *cread)
+{
+ int index0, length0;
+ char **vector, *args;
+ int count, length;
+
+ /* record origin */
+ index0 = cread->index;
+ length0 = cread->length;
+
+ /* count */
+ count = 0;
+ length = 0;
+ while(cread->length) {
+ count++;
+ length += cread->length;
+ next_token(cread);
+ }
+
+ /* allocates */
+ cread->index = index0;
+ cread->length = length0;
+ vector = malloc(length + count + (count + 1) * sizeof(char*));
+ if (vector == NULL)
+ return NULL;
+
+ /* copies */
+ args = (char*)(vector + count + 1);
+ count = 0;
+ while(cread->length) {
+ vector[count++] = args;
+ memcpy(args, &cread->buffer[cread->index], cread->length);
+ args += cread->length;
+ *args++ = 0;
+ next_token(cread);
+ }
+ vector[count] = NULL;
+ cread->index = index0;
+ cread->length = length0;
+ return vector;
+}
+
+static struct type_list *read_type(struct confread *cread)
+{
+ int index, length;
+ struct type_list *result;
+
+ /* record index and length */
+ index = cread->index;
+ length = cread->length;
+
+ /* check no extra characters */
+ if (next_token(cread)) {
+ ERROR("%s:%d: extra characters found after type %.*s", cread->filepath, cread->lineno, length, &cread->buffer[index]);
+ errno = EINVAL;
+ return NULL;
+ }
+
+ /* allocate structure */
+ result = malloc(sizeof(struct type_list) + length);
+ if (result == NULL) {
+ ERROR("%s:%d: out of memory", cread->filepath, cread->lineno);
+ errno = ENOMEM;
+ return NULL;
+ }
+
+ /* fill the structure */
+ memcpy(result->type, &cread->buffer[index], length);
+ result->type[length] = 0;
+ return result;
+}
+
+static enum afm_launch_mode read_mode(struct confread *cread)
+{
+ int index, length;
+ enum afm_launch_mode result;
+
+ assert(cread->index == 0);
+ assert(!strncmp(&cread->buffer[cread->index], "mode", 4));
+
+ /* get the next token: the mode string */
+ if (!next_token(cread)) {
+ ERROR("%s:%d: no mode value set", cread->filepath, cread->lineno);
+ errno = EINVAL;
+ return invalid_launch_mode;
+ }
+
+ /* record index and length */
+ index = cread->index;
+ length = cread->length;
+
+ /* check no extra characters */
+ if (next_token(cread)) {
+ ERROR("%s:%d: extra characters found after mode %.*s", cread->filepath, cread->lineno, length, &cread->buffer[index]);
+ errno = EINVAL;
+ return invalid_launch_mode;
+ }
+
+ /* get the mode */
+ cread->buffer[index + length] = 0;
+ result = launch_mode_of_string(&cread->buffer[index]);
+ if (result == invalid_launch_mode) {
+ ERROR("%s:%d: invalid mode value %s", cread->filepath, cread->lineno, &cread->buffer[index]);
+ errno = EINVAL;
+ }
+ return result;
+}
+
+static void free_type_list(struct type_list *types)
+{
+ while (types != NULL) {
+ struct type_list *next = types->next;
+ free(types);
+ types = next;
+ }
+}
+
+static int read_launchers(struct confread *cread)
+{
+ int rc;
+ struct type_list *types, *lt;
+ struct desc_list *desc;
+ enum afm_launch_mode mode;
+ char **vector;
+
+ /* reads the file */
+ lt = NULL;
+ types = NULL;
+ desc = NULL;
+ mode = invalid_launch_mode;
+ rc = read_line(cread);
+ while (rc > 0) {
+ if (cread->index == 0) {
+ if (cread->length == 4 && !memcmp(&cread->buffer[cread->index], "mode", 4)) {
+ /* check if allowed */
+ if (types != NULL) {
+ ERROR("%s:%d: mode found before launch vector", cread->filepath, cread->lineno);
+ errno = EINVAL;
+ free_type_list(types);
+ return -1;
+ }
+
+ /* read the mode */
+ mode = read_mode(cread);
+ if (mode == invalid_launch_mode)
+ return -1;
+ } else {
+ if (mode == invalid_launch_mode) {
+ ERROR("%s:%d: mode not found before type", cread->filepath, cread->lineno);
+ errno = EINVAL;
+ assert(types == NULL);
+ return -1;
+ }
+ /* read a type */
+ lt = read_type(cread);
+ if (lt == NULL) {
+ free_type_list(types);
+ return -1;
+ }
+ lt->next = types;
+ types = lt;
+ }
+ desc = NULL;
+ } else if (types == NULL && desc == NULL) {
+ if (lt == NULL)
+ ERROR("%s:%d: untyped launch vector found", cread->filepath, cread->lineno);
+ else
+ ERROR("%s:%d: extra launch vector found (2 max)", cread->filepath, cread->lineno);
+ errno = EINVAL;
+ return -1;
+ } else {
+ vector = read_vector(cread);
+ if (vector == NULL) {
+ ERROR("%s:%d: out of memory", cread->filepath, cread->lineno);
+ free_type_list(types);
+ errno = ENOMEM;
+ return -1;
+ }
+ if (types) {
+ assert(desc == NULL);
+ desc = malloc(sizeof * desc);
+ if (desc == NULL) {
+ ERROR("%s:%d: out of memory", cread->filepath, cread->lineno);
+ free_type_list(types);
+ errno = ENOMEM;
+ return -1;
+ }
+ desc->next = launchers;
+ desc->mode = mode;
+ desc->types = types;
+ desc->execs[0] = vector;
+ desc->execs[1] = NULL;
+ types = NULL;
+ launchers = desc;
+ } else {
+ desc->execs[1] = vector;
+ desc = NULL;
+ }
+ }
+ rc = read_line(cread);
+ }
+ if (types != NULL) {
+ ERROR("%s:%d: end of file found before launch vector", cread->filepath, cread->lineno);
+ free_type_list(types);
+ errno = EINVAL;
+ return -1;
+ }
+ return rc;
+}
+
+static int read_configuration_file(const char *filepath)
+{
+ int rc;
+ struct confread cread;
+
+ /* opens the configuration file */
+ cread.file = fopen(filepath, "r");
+ if (cread.file == NULL) {
+ /* error */
+ ERROR("can't read file %s: %m", filepath);
+ rc = -1;
+ } else {
+ /* reads it */
+ cread.filepath = filepath;
+ cread.lineno = 0;
+ rc = read_launchers(&cread);
+ fclose(cread.file);
+ }
+ return rc;
+}
+
/*
%I icondir FWK_ICON_DIR
%P port params->port
%p plugins desc->plugins
%W width desc->width
%H height desc->height
+%% %
*/
-static const char *args_for_afb_daemon[] = {
- "/usr/bin/afb-daemon",
- "--daemon",
- "--alias=/icons:%I",
- "--port=%P",
- "--rootdir=%D",
- "--token=%S",
- NULL
-};
-
-static const char *args_for_qmlviewer[] = {
- "/usr/bin/qt5/qmlscene",
- "-fullscreen",
- "-I",
- "%r",
- "-I",
- "%r/imports",
- "%r/%c",
- NULL
-};
-
-static const char *args_for_web_runtime[] = {
- "/usr/bin/web-runtime",
- "http://localhost:%P/%c?token=%S",
- NULL
-};
-
-static const char *args_for_binary[] = {
- "%r/%c",
- NULL
-};
-
-struct execdesc {
- const char *type;
- const char **master_args;
- const char **slave_args;
-};
-
-static struct execdesc known_launchers[] = {
- { "text/html", args_for_afb_daemon, args_for_web_runtime },
- { "application/x-executable", args_for_binary, NULL },
- { "text/vnd.qt.qml", args_for_qmlviewer, NULL }
-};
-
-struct launchparam {
- int port;
- const char *secret;
- const char *datadir;
- const char **master_args;
- const char **slave_args;
-};
-
static char **instantiate_arguments(const char **args, struct afm_launch_desc *desc, struct launchparam *params)
{
const char **iter, *p, *v;
/* loop that either compute the size and build the result */
data = NULL;
+ result = NULL;
n = s = 0;
for (;;) {
iter = args;
return port;
}
-
-
static int launchexec1(struct afm_launch_desc *desc, pid_t children[2], struct launchparam *params)
{
int rc;
}
/********* in the master child ************/
+
+ /* avoid set-gid effect */
+ setresgid(groupid, groupid, groupid);
+
/* enter the process group */
rc = setpgid(0, 0);
if (rc) {
_exit(1);
}
- args = instantiate_arguments(params->master_args, desc, params);
+ args = instantiate_arguments(params->master, desc, params);
if (args == NULL) {
ERROR("out of memory in master");
}
close(mpipe[0]);
close(spipe[1]);
+ /* avoid set-gid effect */
+ setresgid(groupid, groupid, groupid);
+
/* enter the process group */
rc = setpgid(0, 0);
if (rc) {
_exit(1);
}
- args = instantiate_arguments(params->slave_args, desc, params);
+ args = instantiate_arguments(params->slave, desc, params);
if (args == NULL) {
ERROR("out of memory in slave");
}
/********* still in the master child ************/
close(spipe[1]);
- args = instantiate_arguments(params->master_args, desc, params);
+ args = instantiate_arguments(params->master, desc, params);
if (args == NULL) {
ERROR("out of memory in master");
}
_exit(1);
}
-int afm_launch(struct afm_launch_desc *desc, pid_t children[2])
+int afm_launch_initialize()
+{
+ int rc;
+ gid_t r, e, s;
+
+ getresgid(&r, &e, &s);
+ if (s && s != e)
+ groupid = s;
+ else
+ groupid = -1;
+
+ rc = read_configuration_file(FWK_LAUNCH_CONF);
+ dump_launchers();
+ return rc;
+}
+
+static struct desc_list *search_launcher(const char *type, enum afm_launch_mode mode)
+{
+ struct desc_list *dl;
+ struct type_list *tl;
+
+ for (dl = launchers ; dl ; dl = dl->next)
+ if (dl->mode == mode)
+ for (tl = dl->types ; tl != NULL ; tl = tl->next)
+ if (!strcmp(tl->type, type))
+ return dl;
+ return NULL;
+}
+
+int afm_launch(struct afm_launch_desc *desc, pid_t children[2], char **uri)
{
char datadir[PATH_MAX];
- int ikl, nkl, rc;
+ int rc;
char secret[9];
struct launchparam params;
+ const char *type;
+ struct desc_list *dl;
+
+ /* should be init */
+ assert(groupid != 0);
+ assert(launch_mode_is_valid(desc->mode));
+
+ /* init */
+ children[0] = 0;
+ children[1] = 0;
/* what launcher ? */
- ikl = 0;
- if (desc->type != NULL && *desc->type) {
- nkl = sizeof known_launchers / sizeof * known_launchers;
- while (ikl < nkl && strcmp(desc->type, known_launchers[ikl].type))
- ikl++;
- if (ikl == nkl) {
- ERROR("type %s not found!", desc->type);
- errno = ENOENT;
- return -1;
- }
+ type = desc->type != NULL && *desc->type ? desc->type : DEFAULT_TYPE;
+ dl = search_launcher(type, desc->mode);
+ if (dl == NULL) {
+ ERROR("type %s not found for mode %s!", type, name_of_launch_mode(desc->mode));
+ errno = ENOENT;
+ return -1;
}
/* prepare paths */
params.port = mkport();
params.secret = secret;
params.datadir = datadir;
- params.master_args = known_launchers[ikl].master_args;
- params.slave_args = known_launchers[ikl].slave_args;
+ params.master = (const char **)dl->execs[0];
+ params.slave = (const char **)dl->execs[1];
- return params.slave_args ? launchexec2(desc, children, ¶ms) : launchexec1(desc, children, ¶ms);
+ return params.slave ? launchexec2(desc, children, ¶ms) : launchexec1(desc, children, ¶ms);
}
Code Review / src / app-framework-main.git / blobdiff