4 files changed, 71 insertions, 0 deletions
diff --git a/lib/include/log.h b/lib/include/log.h
index a8549e0..1483559 100644
--- a/lib/include/log.h
+++ b/lib/include/log.h
@@ -1,3 +1,6 @@
+#ifndef VL_LOG_H_INCLUDED
+#define VL_LOG_H_INCLUDED
+
 #include <stdio.h>
 #include <stdarg.h>
 
@@ -7,6 +10,8 @@
 #define LOG_WARN  3u
 #define LOG_ERROR 4u
 
+/* Log functions MUST leave errno untouched */
+
 void vl_log_setlevel(unsigned level);
 
 void vl_logv(unsigned level, const char *fmt, va_list args);
@@ -50,3 +55,5 @@ void vl_log(unsigned level, const char *fmt, ...) __attribute__((format(printf,
 #define LOG_ERROR_ENABLED
 #define vl_error(...) vl_log(LOG_ERROR, __VA_ARGS__)
 #define vl_errorv(...) vl_logv(LOG_ERROR, __VA_ARGS__)
+
+#endif
diff --git a/lib/include/net.h b/lib/include/net.h
index 5ee7fc6..610ed77 100644
--- a/lib/include/net.h
+++ b/lib/include/net.h
@@ -2,6 +2,7 @@
 #define VL_NET_H_INCLUDED
 
 #include "arena.h"
+#include "sha1.h"
 
 enum {
   /* The operation completed successfully */
@@ -61,4 +62,32 @@ int vl_net_ensure_verified(const char *url, const char *target_path, unsigned fl
  * Returns NET_EIO if the downloaded file is not readable or could not be verified due to an I/O issue. */
 int vl_net_verify(const char *target_path, unsigned flags, ...);
 
+enum {
+  /* The job hasn't been started yet. */
+  STATUS_WAITING = 0u,
+
+  /* The job is in flight. */
+  STATUS_RUNNING = 1u,
+
+  /* The job is finished without errors. */
+  STATUS_COMPLETE = 2u,
+
+  /* The job is finished with errors. */
+  STATUS_ERROR = 3u,
+
+  /* The job finished successfully, but the downloaded file failed integrity checks. */
+  STATUS_INTEGRITY = 4u
+};
+
+struct vl_download_job {
+  const char *url;
+  const char *opath;
+  size_t expect_len;
+  vl_sha1 expect_hash;
+  unsigned verify_flags;
+  unsigned status;
+};
+
+int vl_net_download_all(struct vl_download_job *jobs, size_t njobs, size_t simult);
+
 #endif
diff --git a/lib/include/util.h b/lib/include/util.h
new file mode 100644
index 0000000..5ef3c8b
--- /dev/null
+++ b/lib/include/util.h
@@ -0,0 +1,8 @@
+#ifndef VL_UTIL_H_INCLUDED
+#define VL_UTIL_H_INCLUDED
+
+#include <sys/stat.h>
+
+int vl_mkdir_parents(int fd, char *path, mode_t mode);
+
+#endif
diff --git a/lib/include/vector.h b/lib/include/vector.h
new file mode 100644
index 0000000..02ed84e
--- /dev/null
+++ b/lib/include/vector.h
@@ -0,0 +1,27 @@
+#ifndef VL_VECTOR_H_INCLUDED
+#define VL_VECTOR_H_INCLUDED
+
+#include <stddef.h>
+
+/* implements a vector type (array of same-sized values) */
+
+typedef struct vl__vector_tag vl_vector;
+
+vl_vector *vl_vector_new(size_t sz);
+vl_vector *vl_vector_new_ex(size_t sz, size_t init_cap);
+void vl_vector_free(vl_vector *vec);
+
+/* will abort if realloc fails to shrink the allocation (should never happen) */
+void vl_vector_shrink_to_size(vl_vector *vec);
+
+#define vl_newvec(_t) vl_vector_new(sizeof(_t))
+#define vl_newvec_ex(_t, _ic) vl_vector_new_ex(sizeof(_t), _ic)
+
+int vl_vector_push(vl_vector *vec, void *data);
+int vl_vector_push_vec(vl_vector *vec, void *data, size_t n);
+int vl_vector_push_2d(vl_vector *vec, void **data, size_t n);
+
+size_t vl_vector_size(const vl_vector *vec);
+void *vl_vector_values(const vl_vector *vec, size_t *psz);
+
+#endif