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Demonstrate segmentation fault

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This commit is contained in:
Alexey Romanov
2010-12-09 17:51:25 +03:00
parent 8a2e3e8ad4
commit 9913f3681b
2 changed files with 88 additions and 44 deletions
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130
c_src/sqlite3_drv.c
View File

@@ -395,6 +395,33 @@ static int bind_parameters(
return result;
}
static void get_columns(
sqlite3_drv_t *drv, sqlite3_stmt *statement, int column_count,
int *p_term_count, int *p_term_allocated, ErlDrvTermData **p_dataset) {
int i;
int base = *p_term_count;
*p_term_count += column_count * 3 + 1 + 2 + 2;
if (*p_term_count > *p_term_allocated) {
*p_term_allocated = max(*p_term_count, *p_term_allocated*2);
*p_dataset = driver_realloc(*p_dataset, sizeof(ErlDrvTermData) * *p_term_allocated);
}
for (i = 0; i < column_count; i++) {
char *column_name = (char *) sqlite3_column_name(statement, i);
#ifdef DEBUG
fprintf(drv->log, "Column: %s\n", column_name);
fflush(drv->log);
#endif
(*p_dataset)[base + 2 + (i * 3)] = ERL_DRV_STRING;
(*p_dataset)[base + 2 + (i * 3) + 1] = (ErlDrvTermData) column_name;
(*p_dataset)[base + 2 + (i * 3) + 2] = strlen(column_name);
}
(*p_dataset)[base + 2 + column_count * 3 + 0] = ERL_DRV_NIL;
(*p_dataset)[base + 2 + column_count * 3 + 1] = ERL_DRV_LIST;
(*p_dataset)[base + 2 + column_count * 3 + 2] = column_count + 1;
}
static int sql_bind_and_exec(sqlite3_drv_t *drv, char *buffer, int buffer_size) {
int result;
int index = 0;
@@ -479,39 +506,27 @@ static void sql_exec_async(void *_async_command) {
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 2] = ERL_DRV_PORT;
dataset[term_count - 1] = driver_mk_port(drv->port);
if (column_count > 0) {
int base = term_count;
term_count += 2 + column_count * 3 + 1 + 2 + 2 + 2;
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[base] = ERL_DRV_ATOM;
dataset[base + 1] = drv->atom_columns;
for (i = 0; i < column_count; i++) {
char *column_name = (char *) sqlite3_column_name(statement, i);
#ifdef DEBUG
fprintf(drv->log, "Column: %s\n", column_name);
fflush(drv->log);
#endif
dataset[term_count - 2] = ERL_DRV_ATOM;
dataset[term_count - 1] = drv->atom_columns;
int base = term_count;
get_columns(
drv, statement, column_count, &term_count, &term_allocated, &dataset);
dataset[base + column_count * 3 + 3] = ERL_DRV_TUPLE;
dataset[base + column_count * 3 + 4] = 2;
dataset[base + 2 + (i * 3)] = ERL_DRV_STRING;
dataset[base + 2 + (i * 3) + 1] = (ErlDrvTermData) column_name;
dataset[base + 2 + (i * 3) + 2] = strlen(column_name);
}
dataset[base + 2 + column_count * 3 + 0] = ERL_DRV_NIL;
dataset[base + 2 + column_count * 3 + 1] = ERL_DRV_LIST;
dataset[base + 2 + column_count * 3 + 2] = column_count + 1;
dataset[base + 2 + column_count * 3 + 3] = ERL_DRV_TUPLE;
dataset[base + 2 + column_count * 3 + 4] = 2;
dataset[base + 2 + column_count * 3 + 5] = ERL_DRV_ATOM;
dataset[base + 2 + column_count * 3 + 6] = drv->atom_rows;
dataset[base + column_count * 3 + 5] = ERL_DRV_ATOM;
dataset[base + column_count * 3 + 6] = drv->atom_rows;
}
#ifdef DEBUG
@@ -534,7 +549,7 @@ static void sql_exec_async(void *_async_command) {
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 2] = ERL_DRV_INT64;
dataset[term_count - 1] = (ErlDrvTermData) int64_ptr;
@@ -548,7 +563,7 @@ static void sql_exec_async(void *_async_command) {
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 2] = ERL_DRV_FLOAT;
dataset[term_count - 1] = (ErlDrvTermData) float_ptr;
@@ -565,7 +580,7 @@ static void sql_exec_async(void *_async_command) {
term_count += 8;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 8] = ERL_DRV_ATOM;
dataset[term_count - 7] = drv->atom_blob;
@@ -588,7 +603,7 @@ static void sql_exec_async(void *_async_command) {
term_count += 4;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 4] = ERL_DRV_BINARY;
dataset[term_count - 3] = (ErlDrvTermData) binary;
@@ -600,7 +615,7 @@ static void sql_exec_async(void *_async_command) {
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 2] = ERL_DRV_ATOM;
dataset[term_count - 1] = drv->atom_null;
@@ -611,7 +626,7 @@ static void sql_exec_async(void *_async_command) {
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 2] = ERL_DRV_TUPLE;
dataset[term_count - 1] = column_count;
@@ -638,7 +653,7 @@ static void sql_exec_async(void *_async_command) {
term_count += 3+2+3;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 8] = ERL_DRV_NIL;
dataset[term_count - 7] = ERL_DRV_LIST;
@@ -655,7 +670,7 @@ static void sql_exec_async(void *_async_command) {
term_count += 6;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 6] = ERL_DRV_ATOM;
dataset[term_count - 5] = drv->atom_rowid;
@@ -667,7 +682,7 @@ static void sql_exec_async(void *_async_command) {
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 2] = ERL_DRV_ATOM;
dataset[term_count - 1] = drv->atom_ok;
@@ -676,7 +691,7 @@ static void sql_exec_async(void *_async_command) {
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 2] = ERL_DRV_TUPLE;
dataset[term_count - 1] = 2;
@@ -711,7 +726,7 @@ static void sql_step_async(void *_async_command) {
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 2] = ERL_DRV_PORT;
dataset[term_count - 1] = driver_mk_port(drv->port);
@@ -730,7 +745,7 @@ static void sql_step_async(void *_async_command) {
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 2] = ERL_DRV_INT64;
dataset[term_count - 1] = (ErlDrvTermData) int64_ptr;
@@ -744,7 +759,7 @@ static void sql_step_async(void *_async_command) {
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 2] = ERL_DRV_FLOAT;
dataset[term_count - 1] = (ErlDrvTermData) float_ptr;
@@ -761,7 +776,7 @@ static void sql_step_async(void *_async_command) {
term_count += 8;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 8] = ERL_DRV_ATOM;
dataset[term_count - 7] = drv->atom_blob;
@@ -784,7 +799,7 @@ static void sql_step_async(void *_async_command) {
term_count += 4;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 4] = ERL_DRV_BINARY;
dataset[term_count - 3] = (ErlDrvTermData) binary;
@@ -796,7 +811,7 @@ static void sql_step_async(void *_async_command) {
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 2] = ERL_DRV_ATOM;
dataset[term_count - 1] = drv->atom_null;
@@ -807,7 +822,7 @@ static void sql_step_async(void *_async_command) {
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 2] = ERL_DRV_TUPLE;
dataset[term_count - 1] = column_count;
@@ -819,7 +834,7 @@ static void sql_step_async(void *_async_command) {
term_count += 4;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 4] = ERL_DRV_PORT;
dataset[term_count - 3] = driver_mk_port(drv->port);
@@ -843,7 +858,7 @@ static void sql_step_async(void *_async_command) {
term_count += 2;
if (term_count > term_allocated) {
term_allocated = max(term_count, term_allocated*2);
dataset = driver_realloc(dataset, sizeof(*dataset) * term_allocated);
dataset = driver_realloc(dataset, sizeof(ErlDrvTermData) * term_allocated);
}
dataset[term_count - 2] = ERL_DRV_TUPLE;
dataset[term_count - 1] = 2;
@@ -938,6 +953,35 @@ static int prepared_bind(sqlite3_drv_t *drv, char *buffer, int buffer_size) {
}
}
static int prepared_columns(sqlite3_drv_t *drv, char *buffer, int buffer_size) {
int result;
long long_prepared_index;
int index = 0, type, size;
#ifdef DEBUG
fprintf(drv->log, "Finalizing prepared statement: %.*s\n", buffer_size, buffer);
fflush(drv->log);
#endif
ei_decode_version(buffer, &index, NULL);
ei_decode_long(buffer, &index, &long_prepared_index);
unsigned int prepared_index = (unsigned int) long_prepared_index;
if (prepared_index >= drv->prepared_count) {
return output_error(drv, SQLITE_MISUSE,
"Trying to reset non-existent prepared statement");
}
sqlite3_stmt *statement = drv->prepared_stmts[prepared_index];
// result =
// bind_parameters(drv, buffer, buffer_size, &index, statement, &type, &size);
// if (result == SQLITE_OK) {
// return output_ok(drv);
// } else {
// return result; // error has already been output
// }
}
static int prepared_step(sqlite3_drv_t *drv, char *buffer, int buffer_size) {
int result;
long long_prepared_index;

2
rebar.config
View File

@@ -1,7 +1,7 @@
% -*- mode: erlang -*-
{erl_opts, [debug_info]}. %% required for dialyzer
{port_envs, [{"DRV_LDFLAGS", "$DRV_LDFLAGS -lsqlite3"},
{"DRV_CFLAGS", "$DRV_CFLAGS -Wall -Wextra -Wno-unused-parameter"}]}.
{"DRV_CFLAGS", "$DRV_CFLAGS -g -Wall -Wextra -Wno-unused-parameter"}]}.
{cover_enabled, true}.
{eunit_opts, [verbose, {report,{eunit_surefire,[{dir,"."}]}}]}.
{dialyzer_opts, [{plt, "dialyzer/sqlite3.plt"}]}.